diff --git a/quickstep/res/layout/taskbar.xml b/quickstep/res/layout/taskbar.xml
index b124b33..84e2304 100644
--- a/quickstep/res/layout/taskbar.xml
+++ b/quickstep/res/layout/taskbar.xml
@@ -25,7 +25,6 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:background="@color/taskbar_background"
-        android:gravity="center"
-        android:animateLayoutChanges="true"/>
+        android:gravity="center"/>
 
 </com.android.launcher3.taskbar.TaskbarContainerView>
\ No newline at end of file
diff --git a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
index 6eb1498..4f706cf 100644
--- a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
@@ -328,6 +328,10 @@
     @Override
     public void onDragLayerHierarchyChanged() {
         onLauncherStateOrFocusChanged();
+
+        if (mTaskbarController != null) {
+            mTaskbarController.onLauncherDragLayerHierarchyChanged();
+        }
     }
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
index 343b87e..f04c58d 100644
--- a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
+++ b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
@@ -86,7 +86,6 @@
 import com.android.quickstep.util.StaggeredWorkspaceAnim;
 import com.android.quickstep.util.SurfaceTransactionApplier;
 import com.android.quickstep.views.RecentsView;
-import com.android.systemui.shared.recents.IStartingWindowListener;
 import com.android.systemui.shared.system.ActivityCompat;
 import com.android.systemui.shared.system.ActivityOptionsCompat;
 import com.android.systemui.shared.system.InteractionJankMonitorWrapper;
@@ -98,6 +97,7 @@
 import com.android.systemui.shared.system.RemoteTransitionCompat;
 import com.android.systemui.shared.system.SyncRtSurfaceTransactionApplierCompat.SurfaceParams;
 import com.android.systemui.shared.system.WindowManagerWrapper;
+import com.android.wm.shell.startingsurface.IStartingWindowListener;
 
 import java.util.LinkedHashMap;
 
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarController.java
index 52b3195..744339b 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarController.java
@@ -19,6 +19,8 @@
 import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
 import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
 
+import static com.android.launcher3.AbstractFloatingView.TYPE_ALL;
+import static com.android.launcher3.AbstractFloatingView.TYPE_REPLACE_TASKBAR_WITH_HOTSEAT;
 import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.systemui.shared.system.WindowManagerWrapper.ITYPE_BOTTOM_TAPPABLE_ELEMENT;
@@ -40,6 +42,7 @@
 
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.BaseQuickstepLauncher;
+import com.android.launcher3.Hotseat;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.QuickstepTransitionManager;
 import com.android.launcher3.R;
@@ -144,22 +147,13 @@
                         ActivityManagerWrapper.getInstance().startActivityFromRecents(task.key,
                                 ActivityOptions.makeBasic());
                     } else if (tag instanceof FolderInfo) {
-                        FolderIcon folderIcon = (FolderIcon) view;
-                        Folder folder = folderIcon.getFolder();
-
-                        setTaskbarWindowFullscreen(true);
-
-                        mTaskbarContainerView.post(() -> {
-                            folder.animateOpen();
-
-                            folder.iterateOverItems((itemInfo, itemView) -> {
-                                itemView.setOnClickListener(getItemOnClickListener());
-                                itemView.setOnLongClickListener(getItemOnLongClickListener());
-                                // To play haptic when dragging, like other Taskbar items do.
-                                itemView.setHapticFeedbackEnabled(true);
-                                return false;
-                            });
-                        });
+                        if (mLauncher.hasBeenResumed()) {
+                            FolderInfo folderInfo = (FolderInfo) tag;
+                            onClickedOnFolderFromHome(folderInfo);
+                        } else {
+                            FolderIcon folderIcon = (FolderIcon) view;
+                            onClickedOnFolderInApp(folderIcon);
+                        }
                     } else {
                         ItemClickHandler.INSTANCE.onClick(view);
                     }
@@ -169,6 +163,34 @@
                 };
             }
 
+            // Open the real folder in Launcher.
+            private void onClickedOnFolderFromHome(FolderInfo folderInfo) {
+                alignRealHotseatWithTaskbar();
+
+                FolderIcon folderIcon = (FolderIcon) mLauncher.getHotseat()
+                        .getFirstItemMatch((info, v) -> info == folderInfo);
+                folderIcon.post(folderIcon::performClick);
+            }
+
+            // Open the Taskbar folder, and handle clicks on folder items.
+            private void onClickedOnFolderInApp(FolderIcon folderIcon) {
+                Folder folder = folderIcon.getFolder();
+
+                setTaskbarWindowFullscreen(true);
+
+                mTaskbarContainerView.post(() -> {
+                    folder.animateOpen();
+
+                    folder.iterateOverItems((itemInfo, itemView) -> {
+                        itemView.setOnClickListener(getItemOnClickListener());
+                        itemView.setOnLongClickListener(getItemOnLongClickListener());
+                        // To play haptic when dragging, like other Taskbar items do.
+                        itemView.setHapticFeedbackEnabled(true);
+                        return false;
+                    });
+                });
+            }
+
             @Override
             public View.OnLongClickListener getItemOnLongClickListener() {
                 return view -> {
@@ -307,6 +329,7 @@
             mAnimator = createAnimToLauncher(null, duration);
         } else {
             mAnimator = createAnimToApp(duration);
+            replaceTaskbarWithHotseatOrViceVersa();
         }
         mAnimator.addListener(new AnimatorListenerAdapter() {
             @Override
@@ -356,6 +379,7 @@
             @Override
             public void onAnimationStart(Animator animation) {
                 mTaskbarView.updateHotseatItemsVisibility();
+                setReplaceTaskbarWithHotseat(false);
             }
         });
         return anim.buildAnim();
@@ -452,6 +476,35 @@
                 mTaskbarView.getHeight() - hotseatBounds.bottom);
     }
 
+    /**
+     * A view was added or removed from DragLayer, check if we need to hide our hotseat copy and
+     * show the real one instead.
+     */
+    public void onLauncherDragLayerHierarchyChanged() {
+        replaceTaskbarWithHotseatOrViceVersa();
+    }
+
+    private void replaceTaskbarWithHotseatOrViceVersa() {
+        boolean replaceTaskbarWithHotseat = AbstractFloatingView.getTopOpenViewWithType(mLauncher,
+                TYPE_ALL & TYPE_REPLACE_TASKBAR_WITH_HOTSEAT) != null;
+        if (!mLauncher.hasBeenResumed()) {
+            replaceTaskbarWithHotseat = false;
+        }
+        setReplaceTaskbarWithHotseat(replaceTaskbarWithHotseat);
+    }
+
+    private void setReplaceTaskbarWithHotseat(boolean replaceTaskbarWithHotseat) {
+        Hotseat hotseat = mLauncher.getHotseat();
+        if (replaceTaskbarWithHotseat) {
+            alignRealHotseatWithTaskbar();
+            hotseat.getReplaceTaskbarAlpha().setValue(1f);
+            mTaskbarView.setHotseatViewsHidden(true);
+        } else {
+            hotseat.getReplaceTaskbarAlpha().setValue(0f);
+            mTaskbarView.setHotseatViewsHidden(false);
+        }
+    }
+
     private float getTaskbarScaleOnHome() {
         return 1f / mTaskbarContainerView.getTaskbarActivityContext().getTaskbarIconScale();
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
index a729e77..1d762e9 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
@@ -15,6 +15,7 @@
  */
 package com.android.launcher3.taskbar;
 
+import android.animation.LayoutTransition;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Canvas;
@@ -63,6 +64,7 @@
     private TaskbarController.TaskbarViewCallbacks mControllerCallbacks;
 
     // Initialized in init().
+    private LayoutTransition mLayoutTransition;
     private int mHotseatStartIndex;
     private int mHotseatEndIndex;
     private View mHotseatRecentsDivider;
@@ -76,6 +78,7 @@
     private boolean mIsDraggingItem;
     // Only non-null when the corresponding Folder is open.
     private @Nullable FolderIcon mLeaveBehindFolderIcon;
+    private boolean mIsHotseatHidden;
 
     public TaskbarView(@NonNull Context context) {
         this(context, null);
@@ -107,6 +110,9 @@
     }
 
     protected void init(int numHotseatIcons, int numRecentIcons) {
+        mLayoutTransition = new LayoutTransition();
+        setLayoutTransitionsEnabled(true);
+
         mHotseatStartIndex = 0;
         mHotseatEndIndex = mHotseatStartIndex + numHotseatIcons - 1;
         updateHotseatItems(new ItemInfo[numHotseatIcons]);
@@ -119,6 +125,10 @@
         updateRecentTasks(new Task[numRecentIcons]);
     }
 
+    private void setLayoutTransitionsEnabled(boolean enabled) {
+        setLayoutTransition(enabled ? mLayoutTransition : null);
+    }
+
     protected void cleanup() {
         removeAllViews();
     }
@@ -206,9 +216,19 @@
         }
     }
 
+    /**
+     * Hides or shows the hotseat items immediately (without layout transitions).
+     */
+    protected void setHotseatViewsHidden(boolean hidden) {
+        mIsHotseatHidden = hidden;
+        setLayoutTransitionsEnabled(false);
+        updateHotseatItemsVisibility();
+        setLayoutTransitionsEnabled(true);
+    }
+
     private void updateHotseatItemVisibility(View hotseatView) {
         if (hotseatView.getTag() != null) {
-            hotseatView.setVisibility(VISIBLE);
+            hotseatView.setVisibility(mIsHotseatHidden ? INVISIBLE : VISIBLE);
         } else {
             int oldVisibility = hotseatView.getVisibility();
             int newVisibility = mControllerCallbacks.getEmptyHotseatViewVisibility();
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index 5668817..f25c358 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -35,12 +35,17 @@
 import android.view.MotionEvent;
 
 import com.android.launcher3.util.MainThreadInitializedObject;
-import com.android.systemui.shared.recents.IPinnedStackAnimationListener;
-import com.android.systemui.shared.recents.ISplitScreenListener;
-import com.android.systemui.shared.recents.IStartingWindowListener;
 import com.android.systemui.shared.recents.ISystemUiProxy;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.system.RemoteTransitionCompat;
+import com.android.wm.shell.onehanded.IOneHanded;
+import com.android.wm.shell.pip.IPip;
+import com.android.wm.shell.pip.IPipAnimationListener;
+import com.android.wm.shell.splitscreen.ISplitScreen;
+import com.android.wm.shell.splitscreen.ISplitScreenListener;
+import com.android.wm.shell.startingsurface.IStartingWindow;
+import com.android.wm.shell.startingsurface.IStartingWindowListener;
+import com.android.wm.shell.transition.IShellTransitions;
 
 /**
  * Holds the reference to SystemUI.
@@ -52,8 +57,13 @@
             new MainThreadInitializedObject<>(SystemUiProxy::new);
 
     private ISystemUiProxy mSystemUiProxy;
+    private IPip mPip;
+    private ISplitScreen mSplitScreen;
+    private IOneHanded mOneHanded;
+    private IShellTransitions mShellTransitions;
+    private IStartingWindow mStartingWindow;
     private final DeathRecipient mSystemUiProxyDeathRecipient = () -> {
-        MAIN_EXECUTOR.execute(() -> setProxy(null));
+        MAIN_EXECUTOR.execute(() -> clearProxy());
     };
 
     // Used to dedupe calls to SystemUI
@@ -75,12 +85,23 @@
         return null;
     }
 
-    public void setProxy(ISystemUiProxy proxy) {
+    public void setProxy(ISystemUiProxy proxy, IPip pip, ISplitScreen splitScreen,
+            IOneHanded oneHanded, IShellTransitions shellTransitions,
+            IStartingWindow startingWindow) {
         unlinkToDeath();
         mSystemUiProxy = proxy;
+        mPip = pip;
+        mSplitScreen = splitScreen;
+        mOneHanded = oneHanded;
+        mShellTransitions = shellTransitions;
+        mStartingWindow = startingWindow;
         linkToDeath();
     }
 
+    public void clearProxy() {
+        setProxy(null, null, null, null, null, null);
+    }
+
     // TODO(141886704): Find a way to remove this
     public void setLastSystemUiStateFlags(int stateFlags) {
         mLastSystemUiStateFlags = stateFlags;
@@ -269,21 +290,6 @@
     }
 
     @Override
-    public void setShelfHeight(boolean visible, int shelfHeight) {
-        boolean changed = visible != mLastShelfVisible || shelfHeight != mLastShelfHeight;
-        if (mSystemUiProxy != null && changed) {
-            mLastShelfVisible = visible;
-            mLastShelfHeight = shelfHeight;
-            try {
-                mSystemUiProxy.setShelfHeight(visible, shelfHeight);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call setShelfHeight visible: " + visible
-                        + " height: " + shelfHeight, e);
-            }
-        }
-    }
-
-    @Override
     public void handleImageAsScreenshot(Bitmap bitmap, Rect rect, Insets insets, int i) {
         if (mSystemUiProxy != null) {
             try {
@@ -319,20 +325,6 @@
         }
     }
 
-    /**
-     * Sets listener to get pinned stack animation callbacks.
-     */
-    @Override
-    public void setPinnedStackAnimationListener(IPinnedStackAnimationListener listener) {
-        if (mSystemUiProxy != null) {
-            try {
-                mSystemUiProxy.setPinnedStackAnimationListener(listener);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call setPinnedStackAnimationListener", e);
-            }
-        }
-    }
-
     @Override
     public void onQuickSwitchToNewTask(int rotation) {
         if (mSystemUiProxy != null) {
@@ -358,28 +350,6 @@
     }
 
     @Override
-    public void startOneHandedMode() {
-        if (mSystemUiProxy != null) {
-            try {
-                mSystemUiProxy.startOneHandedMode();
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call startOneHandedMode", e);
-            }
-        }
-    }
-
-    @Override
-    public void stopOneHandedMode() {
-        if (mSystemUiProxy != null) {
-            try {
-                mSystemUiProxy.stopOneHandedMode();
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call stopOneHandedMode", e);
-            }
-        }
-    }
-
-    @Override
     public void expandNotificationPanel() {
         if (mSystemUiProxy != null) {
             try {
@@ -390,12 +360,45 @@
         }
     }
 
-    @Override
+    //
+    // Pip
+    //
+
+    /**
+     * Sets the shelf height.
+     */
+    public void setShelfHeight(boolean visible, int shelfHeight) {
+        boolean changed = visible != mLastShelfVisible || shelfHeight != mLastShelfHeight;
+        if (mPip != null && changed) {
+            mLastShelfVisible = visible;
+            mLastShelfHeight = shelfHeight;
+            try {
+                mPip.setShelfHeight(visible, shelfHeight);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call setShelfHeight visible: " + visible
+                        + " height: " + shelfHeight, e);
+            }
+        }
+    }
+
+    /**
+     * Sets listener to get pinned stack animation callbacks.
+     */
+    public void setPinnedStackAnimationListener(IPipAnimationListener listener) {
+        if (mPip != null) {
+            try {
+                mPip.setPinnedStackAnimationListener(listener);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call setPinnedStackAnimationListener", e);
+            }
+        }
+    }
+
     public Rect startSwipePipToHome(ComponentName componentName, ActivityInfo activityInfo,
             PictureInPictureParams pictureInPictureParams, int launcherRotation, int shelfHeight) {
-        if (mSystemUiProxy != null) {
+        if (mPip != null) {
             try {
-                return mSystemUiProxy.startSwipePipToHome(componentName, activityInfo,
+                return mPip.startSwipePipToHome(componentName, activityInfo,
                         pictureInPictureParams, launcherRotation, shelfHeight);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startSwipePipToHome", e);
@@ -404,111 +407,85 @@
         return null;
     }
 
-    @Override
     public void stopSwipePipToHome(ComponentName componentName, Rect destinationBounds) {
-        if (mSystemUiProxy != null) {
+        if (mPip != null) {
             try {
-                mSystemUiProxy.stopSwipePipToHome(componentName, destinationBounds);
+                mPip.stopSwipePipToHome(componentName, destinationBounds);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call stopSwipePipToHome");
             }
         }
     }
 
-    @Override
-    public void registerRemoteTransition(RemoteTransitionCompat remoteTransition) {
-        if (mSystemUiProxy != null) {
-            try {
-                mSystemUiProxy.registerRemoteTransition(remoteTransition);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call registerRemoteTransition");
-            }
-        }
-    }
+    //
+    // Splitscreen
+    //
 
-    @Override
-    public void unregisterRemoteTransition(RemoteTransitionCompat remoteTransition) {
-        if (mSystemUiProxy != null) {
-            try {
-                mSystemUiProxy.unregisterRemoteTransition(remoteTransition);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call registerRemoteTransition");
-            }
-        }
-    }
-
-    @Override
     public void registerSplitScreenListener(ISplitScreenListener listener) {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.registerSplitScreenListener(listener);
+                mSplitScreen.registerSplitScreenListener(listener);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call registerSplitScreenListener");
             }
         }
     }
 
-    @Override
     public void unregisterSplitScreenListener(ISplitScreenListener listener) {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.unregisterSplitScreenListener(listener);
+                mSplitScreen.unregisterSplitScreenListener(listener);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call unregisterSplitScreenListener");
             }
         }
     }
 
-    @Override
     public void setSideStageVisibility(boolean visible) {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.setSideStageVisibility(visible);
+                mSplitScreen.setSideStageVisibility(visible);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call setSideStageVisibility");
             }
         }
     }
 
-    @Override
     public void exitSplitScreen() {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.exitSplitScreen();
+                mSplitScreen.exitSplitScreen();
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call exitSplitScreen");
             }
         }
     }
 
-    @Override
     public void exitSplitScreenOnHide(boolean exitSplitScreenOnHide) {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.exitSplitScreenOnHide(exitSplitScreenOnHide);
+                mSplitScreen.exitSplitScreenOnHide(exitSplitScreenOnHide);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call exitSplitScreen");
             }
         }
     }
 
-    @Override
     public void startTask(int taskId, int stage, int position, Bundle options) {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.startTask(taskId, stage, position, options);
+                mSplitScreen.startTask(taskId, stage, position, options);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startTask");
             }
         }
     }
 
-    @Override
     public void startShortcut(String packageName, String shortcutId, int stage, int position,
             Bundle options, UserHandle user) {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.startShortcut(packageName, shortcutId, stage, position, options,
+                mSplitScreen.startShortcut(packageName, shortcutId, stage, position, options,
                         user);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startShortcut");
@@ -516,38 +493,87 @@
         }
     }
 
-    @Override
-    public void startIntent(PendingIntent intent, Intent fillInIntent, int stage,
-            int position, Bundle options) {
-        if (mSystemUiProxy != null) {
+    public void startIntent(PendingIntent intent, Intent fillInIntent, int stage, int position,
+            Bundle options) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.startIntent(intent, fillInIntent, stage, position,
-                        options);
+                mSplitScreen.startIntent(intent, fillInIntent, stage, position, options);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startIntent");
             }
         }
     }
 
-    @Override
     public void removeFromSideStage(int taskId) {
-        if (mSystemUiProxy != null) {
+        if (mSplitScreen != null) {
             try {
-                mSystemUiProxy.removeFromSideStage(taskId);
+                mSplitScreen.removeFromSideStage(taskId);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call removeFromSideStage");
             }
         }
     }
 
+    //
+    // One handed
+    //
+
+    public void startOneHandedMode() {
+        if (mOneHanded != null) {
+            try {
+                mOneHanded.startOneHanded();
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call startOneHandedMode", e);
+            }
+        }
+    }
+
+    public void stopOneHandedMode() {
+        if (mOneHanded != null) {
+            try {
+                mOneHanded.stopOneHanded();
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call stopOneHandedMode", e);
+            }
+        }
+    }
+
+    //
+    // Remote transitions
+    //
+
+    public void registerRemoteTransition(RemoteTransitionCompat remoteTransition) {
+        if (mShellTransitions != null) {
+            try {
+                mShellTransitions.registerRemote(remoteTransition.getFilter(),
+                        remoteTransition.getTransition());
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call registerRemoteTransition");
+            }
+        }
+    }
+
+    public void unregisterRemoteTransition(RemoteTransitionCompat remoteTransition) {
+        if (mShellTransitions != null) {
+            try {
+                mShellTransitions.unregisterRemote(remoteTransition.getTransition());
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call registerRemoteTransition");
+            }
+        }
+    }
+
+    //
+    // Starting window
+    //
+
     /**
      * Sets listener to get callbacks when launching a task.
      */
-    @Override
     public void setStartingWindowListener(IStartingWindowListener listener) {
-        if (mSystemUiProxy != null) {
+        if (mStartingWindow != null) {
             try {
-                mSystemUiProxy.setStartingWindowListener(listener);
+                mStartingWindow.setStartingWindowListener(listener);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call setStartingWindowListener", e);
             }
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index fc805d0..1cb5f5d 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -24,6 +24,11 @@
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.quickstep.GestureState.DEFAULT_STATE;
 import static com.android.quickstep.util.NavigationModeFeatureFlag.LIVE_TILE;
+import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SHELL_ONE_HANDED;
+import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SHELL_PIP;
+import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SHELL_SHELL_TRANSITIONS;
+import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SHELL_SPLIT_SCREEN;
+import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SHELL_STARTING_WINDOW;
 import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SYSUI_PROXY;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_TRACING_ENABLED;
 
@@ -101,6 +106,11 @@
 import com.android.systemui.shared.system.InputConsumerController;
 import com.android.systemui.shared.system.InputMonitorCompat;
 import com.android.systemui.shared.tracing.ProtoTraceable;
+import com.android.wm.shell.onehanded.IOneHanded;
+import com.android.wm.shell.pip.IPip;
+import com.android.wm.shell.splitscreen.ISplitScreen;
+import com.android.wm.shell.startingsurface.IStartingWindow;
+import com.android.wm.shell.transition.IShellTransitions;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -140,8 +150,18 @@
         public void onInitialize(Bundle bundle) {
             ISystemUiProxy proxy = ISystemUiProxy.Stub.asInterface(
                     bundle.getBinder(KEY_EXTRA_SYSUI_PROXY));
+            IPip pip = IPip.Stub.asInterface(bundle.getBinder(KEY_EXTRA_SHELL_PIP));
+            ISplitScreen splitscreen = ISplitScreen.Stub.asInterface(bundle.getBinder(
+                    KEY_EXTRA_SHELL_SPLIT_SCREEN));
+            IOneHanded onehanded = IOneHanded.Stub.asInterface(
+                    bundle.getBinder(KEY_EXTRA_SHELL_ONE_HANDED));
+            IShellTransitions shellTransitions = IShellTransitions.Stub.asInterface(
+                    bundle.getBinder(KEY_EXTRA_SHELL_SHELL_TRANSITIONS));
+            IStartingWindow startingWindow = IStartingWindow.Stub.asInterface(
+                    bundle.getBinder(KEY_EXTRA_SHELL_STARTING_WINDOW));
             MAIN_EXECUTOR.execute(() -> {
-                SystemUiProxy.INSTANCE.get(TouchInteractionService.this).setProxy(proxy);
+                SystemUiProxy.INSTANCE.get(TouchInteractionService.this).setProxy(proxy, pip,
+                        splitscreen, onehanded, shellTransitions, startingWindow);
                 TouchInteractionService.this.initInputMonitor();
                 preloadOverview(true /* fromInit */);
                 mDeviceState.runOnUserUnlocked(() -> {
@@ -421,7 +441,7 @@
         }
         disposeEventHandlers();
         mDeviceState.destroy();
-        SystemUiProxy.INSTANCE.get(this).setProxy(null);
+        SystemUiProxy.INSTANCE.get(this).clearProxy();
         ProtoTracer.INSTANCE.get(this).stop();
         ProtoTracer.INSTANCE.get(this).remove(this);
 
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 9a903dc..261c43f 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -39,6 +39,7 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_TASK_DISMISS_SWIPE_UP;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_TASK_LAUNCH_SWIPE_DOWN;
 import static com.android.launcher3.statehandlers.DepthController.DEPTH;
+import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
 import static com.android.launcher3.util.SystemUiController.UI_STATE_OVERVIEW;
 import static com.android.quickstep.TaskUtils.checkCurrentOrManagedUserId;
@@ -133,13 +134,13 @@
 import com.android.quickstep.util.TaskViewSimulator;
 import com.android.quickstep.util.TransformParams;
 import com.android.systemui.plugins.ResourceProvider;
-import com.android.systemui.shared.recents.IPinnedStackAnimationListener;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.recents.model.Task.TaskKey;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.PackageManagerWrapper;
 import com.android.systemui.shared.system.TaskStackChangeListener;
+import com.android.wm.shell.pip.IPipAnimationListener;
 
 import java.util.ArrayList;
 import java.util.function.Consumer;
@@ -377,7 +378,7 @@
         }
     };
 
-    private final PinnedStackAnimationListener mIPinnedStackAnimationListener =
+    private final PinnedStackAnimationListener mIPipAnimationListener =
             new PinnedStackAnimationListener();
 
     // Used to keep track of the last requested task list id, so that we do not request to load the
@@ -597,9 +598,9 @@
         mLiveTileParams.setSyncTransactionApplier(mSyncTransactionApplier);
         RecentsModel.INSTANCE.get(getContext()).addThumbnailChangeListener(this);
         mIdp.addOnChangeListener(this);
-        mIPinnedStackAnimationListener.setActivity(mActivity);
+        mIPipAnimationListener.setActivity(mActivity);
         SystemUiProxy.INSTANCE.get(getContext()).setPinnedStackAnimationListener(
-                mIPinnedStackAnimationListener);
+                mIPipAnimationListener);
         mOrientationState.initListeners();
         SplitScreenBounds.INSTANCE.addOnChangeListener(this);
         mTaskOverlayFactory.initListeners();
@@ -618,7 +619,7 @@
         mIdp.removeOnChangeListener(this);
         SystemUiProxy.INSTANCE.get(getContext()).setPinnedStackAnimationListener(null);
         SplitScreenBounds.INSTANCE.removeOnChangeListener(this);
-        mIPinnedStackAnimationListener.setActivity(null);
+        mIPipAnimationListener.setActivity(null);
         mOrientationState.destroyListeners();
         mTaskOverlayFactory.removeListeners();
     }
@@ -2922,7 +2923,7 @@
     }
 
     private static class PinnedStackAnimationListener<T extends BaseActivity> extends
-            IPinnedStackAnimationListener.Stub {
+            IPipAnimationListener.Stub {
         private T mActivity;
 
         public void setActivity(T activity) {
@@ -2930,10 +2931,12 @@
         }
 
         @Override
-        public void onPinnedStackAnimationStarted() {
-            // Needed for activities that auto-enter PiP, which will not trigger a remote
-            // animation to be created
-            mActivity.clearForceInvisibleFlag(STATE_HANDLER_INVISIBILITY_FLAGS);
+        public void onPipAnimationStarted() {
+            MAIN_EXECUTOR.execute(() -> {
+                // Needed for activities that auto-enter PiP, which will not trigger a remote
+                // animation to be created
+                mActivity.clearForceInvisibleFlag(STATE_HANDLER_INVISIBILITY_FLAGS);
+            });
         }
     }
 }
diff --git a/src/com/android/launcher3/AbstractFloatingView.java b/src/com/android/launcher3/AbstractFloatingView.java
index 95cdbdd..e263c7a 100644
--- a/src/com/android/launcher3/AbstractFloatingView.java
+++ b/src/com/android/launcher3/AbstractFloatingView.java
@@ -98,6 +98,9 @@
     public static final int TYPE_HIDE_BACK_BUTTON = TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE
             | TYPE_SNACKBAR | TYPE_WIDGET_RESIZE_FRAME | TYPE_LISTENER;
 
+    // When these types of floating views are open, hide the taskbar hotseat and show the real one.
+    public static final int TYPE_REPLACE_TASKBAR_WITH_HOTSEAT = TYPE_FOLDER | TYPE_ACTION_POPUP;
+
     public static final int TYPE_ACCESSIBLE = TYPE_ALL & ~TYPE_DISCOVERY_BOUNCE & ~TYPE_LISTENER
             & ~TYPE_ALL_APPS_EDU;
 
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 2440854..fb7a99f 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -708,10 +708,11 @@
                     mInsets.top + availableHeightPx);
         } else {
             // Folders should only appear below the drop target bar and above the hotseat
+            int hotseatTop = isTaskbarPresent ? taskbarSize : hotseatBarSizePx;
             return new Rect(mInsets.left + edgeMarginPx,
                     mInsets.top + dropTargetBarSizePx + edgeMarginPx,
                     mInsets.left + availableWidthPx - edgeMarginPx,
-                    mInsets.top + availableHeightPx - hotseatBarSizePx
+                    mInsets.top + availableHeightPx - hotseatTop
                             - workspacePageIndicatorHeight - edgeMarginPx);
         }
     }
diff --git a/src/com/android/launcher3/Hotseat.java b/src/com/android/launcher3/Hotseat.java
index b2112ad..e5b75c1 100644
--- a/src/com/android/launcher3/Hotseat.java
+++ b/src/com/android/launcher3/Hotseat.java
@@ -29,6 +29,7 @@
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.util.MultiValueAlpha;
 
 import java.util.function.Consumer;
 
@@ -37,6 +38,10 @@
  */
 public class Hotseat extends CellLayout implements Insettable {
 
+    private static final int ALPHA_INDEX_STATE = 0;
+    private static final int ALPHA_INDEX_REPLACE_TASKBAR = 1;
+    private static final int NUM_ALPHA_CHANNELS = 2;
+
     @ViewDebug.ExportedProperty(category = "launcher")
     private boolean mHasVerticalHotseat;
     private Workspace mWorkspace;
@@ -44,6 +49,8 @@
     @Nullable
     private Consumer<Boolean> mOnVisibilityAggregatedCallback;
 
+    private final MultiValueAlpha mMultiValueAlpha;
+
     public Hotseat(Context context) {
         this(context, null);
     }
@@ -54,6 +61,8 @@
 
     public Hotseat(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
+        mMultiValueAlpha = new MultiValueAlpha(this, NUM_ALPHA_CHANNELS, MultiValueAlpha.Mode.MAX);
+        mMultiValueAlpha.setUpdateVisibility(true);
     }
 
     /**
@@ -174,4 +183,12 @@
     public View getFirstItemMatch(Workspace.ItemOperator itemOperator) {
         return mWorkspace.getFirstMatch(new CellLayout[] { this }, itemOperator);
     }
+
+    public MultiValueAlpha.AlphaProperty getStateAlpha() {
+        return mMultiValueAlpha.getProperty(ALPHA_INDEX_STATE);
+    }
+
+    public MultiValueAlpha.AlphaProperty getReplaceTaskbarAlpha() {
+        return mMultiValueAlpha.getProperty(ALPHA_INDEX_REPLACE_TASKBAR);
+    }
 }
diff --git a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
index 660eeab..d6d2f73 100644
--- a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
+++ b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
@@ -55,6 +55,7 @@
 import com.android.launcher3.graphics.WorkspaceDragScrim;
 import com.android.launcher3.states.StateAnimationConfig;
 import com.android.launcher3.util.DynamicResource;
+import com.android.launcher3.util.MultiValueAlpha;
 import com.android.systemui.plugins.ResourceProvider;
 
 /**
@@ -143,8 +144,8 @@
             }
 
             float hotseatIconsAlpha = (elements & HOTSEAT_ICONS) != 0 ? 1 : 0;
-            propertySetter.setViewAlpha(hotseat, hotseatIconsAlpha,
-                    config.getInterpolator(ANIM_HOTSEAT_FADE, fadeInterpolator));
+            propertySetter.setFloat(hotseat.getStateAlpha(), MultiValueAlpha.VALUE,
+                    hotseatIconsAlpha, config.getInterpolator(ANIM_HOTSEAT_FADE, fadeInterpolator));
             float workspacePageIndicatorAlpha = (elements & WORKSPACE_PAGE_INDICATOR) != 0 ? 1 : 0;
             propertySetter.setViewAlpha(mLauncher.getWorkspace().getPageIndicator(),
                     workspacePageIndicatorAlpha, fadeInterpolator);
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index e406e9b..3657e89 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -198,10 +198,10 @@
             "ENABLE_APP_PREDICTIONS_WHILE_VISIBLE", true, "Allows app "
             + "predictions to be updated while they are visible to the user.");
 
-    public static final BooleanFlag ENABLE_TASKBAR = new DeviceFlag(
+    public static final BooleanFlag ENABLE_TASKBAR = getDebugFlag(
             "ENABLE_TASKBAR", false, "Allows a system Taskbar to be shown on larger devices.");
 
-    public static final BooleanFlag ENABLE_OVERVIEW_GRID = new DeviceFlag(
+    public static final BooleanFlag ENABLE_OVERVIEW_GRID = getDebugFlag(
             "ENABLE_OVERVIEW_GRID", false, "Uses grid overview layout. "
             + "Only applicable on large screen devices.");
 
diff --git a/src/com/android/launcher3/popup/ArrowPopup.java b/src/com/android/launcher3/popup/ArrowPopup.java
index 5a34d2a..15915e5 100644
--- a/src/com/android/launcher3/popup/ArrowPopup.java
+++ b/src/com/android/launcher3/popup/ArrowPopup.java
@@ -164,7 +164,9 @@
             reverseOrder(viewsToFlip);
         }
         onInflationComplete(reverseOrder);
-        addArrow();
+        if (shouldAddArrow()) {
+            addArrow();
+        }
         animateOpen();
     }
 
@@ -174,7 +176,9 @@
     protected void show() {
         setupForDisplay();
         onInflationComplete(false);
-        addArrow();
+        if (shouldAddArrow()) {
+            addArrow();
+        }
         animateOpen();
     }
 
@@ -233,6 +237,13 @@
     }
 
     /**
+     * Returns whether or not we should add the arrow.
+     */
+    protected boolean shouldAddArrow() {
+        return true;
+    }
+
+    /**
      * Provide the location of the target object relative to the dragLayer.
      */
     protected abstract void getTargetObjectLocation(Rect outPos);
@@ -392,13 +403,18 @@
         return getChildCount() > 0 ? getChildAt(0) : this;
     }
 
+    private int getArrowDuration() {
+        return shouldAddArrow()
+                ? getResources().getInteger(R.integer.config_popupArrowOpenCloseDuration)
+                : 0;
+    }
     private void animateOpen() {
         setVisibility(View.VISIBLE);
 
         final AnimatorSet openAnim = new AnimatorSet();
         final Resources res = getResources();
         final long revealDuration = (long) res.getInteger(R.integer.config_popupOpenCloseDuration);
-        final long arrowDuration = res.getInteger(R.integer.config_popupArrowOpenCloseDuration);
+        final long arrowDuration = getArrowDuration();
         final TimeInterpolator revealInterpolator = ACCEL_DEACCEL;
 
         // Rectangular reveal.
@@ -460,7 +476,7 @@
         final Resources res = getResources();
         final TimeInterpolator revealInterpolator = ACCEL_DEACCEL;
         final long revealDuration = res.getInteger(R.integer.config_popupOpenCloseDuration);
-        final long arrowDuration = res.getInteger(R.integer.config_popupArrowOpenCloseDuration);
+        final long arrowDuration = getArrowDuration();
 
         // Hide the arrow
         Animator scaleArrow = ObjectAnimator.ofFloat(mArrow, LauncherAnimUtils.SCALE_PROPERTY, 0)
diff --git a/src/com/android/launcher3/util/MultiValueAlpha.java b/src/com/android/launcher3/util/MultiValueAlpha.java
index 5be9529..c79b1f6 100644
--- a/src/com/android/launcher3/util/MultiValueAlpha.java
+++ b/src/com/android/launcher3/util/MultiValueAlpha.java
@@ -42,16 +42,49 @@
                 }
             };
 
+    /**
+     * Determines how each alpha should factor into the final alpha.
+     */
+    public enum Mode {
+        BLEND(1f) {
+            @Override
+            public float calculateNewAlpha(float currentAlpha, float otherAlpha) {
+                return currentAlpha * otherAlpha;
+            }
+        },
+
+        MAX(0f) {
+            @Override
+            public float calculateNewAlpha(float currentAlpha, float otherAlpha) {
+                return Math.max(currentAlpha, otherAlpha);
+            }
+        };
+
+        Mode(float startAlpha) {
+            mStartAlpha = startAlpha;
+        }
+
+        protected final float mStartAlpha;
+        protected abstract float calculateNewAlpha(float currentAlpha, float otherAlpha);
+    }
+
     private final View mView;
     private final AlphaProperty[] mMyProperties;
+    private final Mode mMode;
 
     private int mValidMask;
     // Whether we should change from INVISIBLE to VISIBLE and vice versa at low alpha values.
     private boolean mUpdateVisibility;
 
     public MultiValueAlpha(View view, int size) {
+        this(view, size, Mode.BLEND);
+    }
+
+    public MultiValueAlpha(View view, int size, Mode mode) {
         mView = view;
         mMyProperties = new AlphaProperty[size];
+        mMode = mode;
+        mView.setAlpha(mMode.mStartAlpha);
 
         mValidMask = 0;
         for (int i = 0; i < size; i++) {
@@ -79,9 +112,9 @@
 
         private final int mMyMask;
 
-        private float mValue = 1;
+        private float mValue = mMode.mStartAlpha;
         // Factor of all other alpha channels, only valid if mMyMask is present in mValidMask.
-        private float mOthers = 1;
+        private float mOthers = mMode.mStartAlpha;
 
         AlphaProperty(int myMask) {
             mMyMask = myMask;
@@ -94,10 +127,10 @@
 
             if ((mValidMask & mMyMask) == 0) {
                 // Our cache value is not correct, recompute it.
-                mOthers = 1;
+                mOthers = mMode.mStartAlpha;
                 for (AlphaProperty prop : mMyProperties) {
                     if (prop != this) {
-                        mOthers *= prop.mValue;
+                        mOthers = mMode.calculateNewAlpha(mOthers, prop.mValue);
                     }
                 }
             }
@@ -107,7 +140,7 @@
             mValidMask = mMyMask;
             mValue = value;
 
-            mView.setAlpha(mOthers * mValue);
+            mView.setAlpha(mMode.calculateNewAlpha(mOthers, mValue));
             if (mUpdateVisibility) {
                 AlphaUpdateListener.updateVisibility(mView);
             }
diff --git a/src/com/android/launcher3/views/OptionsPopupView.java b/src/com/android/launcher3/views/OptionsPopupView.java
index 899dcf7..1a114f3 100644
--- a/src/com/android/launcher3/views/OptionsPopupView.java
+++ b/src/com/android/launcher3/views/OptionsPopupView.java
@@ -114,6 +114,11 @@
     }
 
     @Override
+    protected boolean shouldAddArrow() {
+        return false;
+    }
+
+    @Override
     protected void getTargetObjectLocation(Rect outPos) {
         mTargetRect.roundOut(outPos);
     }
diff --git a/tests/src/com/android/launcher3/ui/WorkTabTest.java b/tests/src/com/android/launcher3/ui/WorkTabTest.java
index a6c7c03..8f4381b 100644
--- a/tests/src/com/android/launcher3/ui/WorkTabTest.java
+++ b/tests/src/com/android/launcher3/ui/WorkTabTest.java
@@ -18,7 +18,6 @@
 import static com.android.launcher3.LauncherState.ALL_APPS;
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.allapps.AllAppsStore.DEFER_UPDATES_TEST;
-import static com.android.launcher3.tapl.LauncherInstrumentation.LONG_WAIT_TIME_MS;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -37,6 +36,7 @@
 import com.android.launcher3.allapps.AllAppsPagedView;
 import com.android.launcher3.allapps.WorkModeSwitch;
 import com.android.launcher3.dragndrop.DragLayer;
+import com.android.launcher3.tapl.LauncherInstrumentation;
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.views.WorkEduView;
 
@@ -147,7 +147,7 @@
                 return true;
             }
             return false;
-        }, LONG_WAIT_TIME_MS);
+        }, LauncherInstrumentation.WAIT_TIME_MS);
 
         executeOnLauncher(launcher -> launcher.getStateManager().goToState(ALL_APPS));
         WorkEduView workEduView = getEduView();
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index f279a82..a3f37d2 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -155,8 +155,7 @@
     private static final String OVERVIEW_RES_ID = "overview_panel";
     private static final String WIDGETS_RES_ID = "primary_widgets_list_view";
     private static final String CONTEXT_MENU_RES_ID = "deep_shortcuts_container";
-    public static final int WAIT_TIME_MS = 10000;
-    public static final int LONG_WAIT_TIME_MS = 60000;
+    public static final int WAIT_TIME_MS = 60000;
     private static final String SYSTEMUI_PACKAGE = "com.android.systemui";
     private static final String ANDROID_PACKAGE = "android";
 
@@ -656,7 +655,7 @@
         try {
             final AccessibilityEvent event =
                     mInstrumentation.getUiAutomation().executeAndWaitForEvent(
-                            command, eventFilter, LONG_WAIT_TIME_MS);
+                            command, eventFilter, WAIT_TIME_MS);
             assertNotNull("executeAndWaitForEvent returned null (this can't happen)", event);
             final Parcelable parcelableData = event.getParcelableData();
             event.recycle();