diff --git a/go/quickstep/src/com/android/quickstep/TaskOverlayFactoryGo.java b/go/quickstep/src/com/android/quickstep/TaskOverlayFactoryGo.java
index 754782b..65cdcf0 100644
--- a/go/quickstep/src/com/android/quickstep/TaskOverlayFactoryGo.java
+++ b/go/quickstep/src/com/android/quickstep/TaskOverlayFactoryGo.java
@@ -53,14 +53,17 @@
     public static final int ERROR_PERMISSIONS = 1;
     private static final String TAG = "TaskOverlayFactoryGo";
 
-    // Empty constructor required for ResourceBasedOverride
-    public TaskOverlayFactoryGo(Context context) {}
+    private AssistContentRequester mContentRequester;
+
+    public TaskOverlayFactoryGo(Context context) {
+        mContentRequester = new AssistContentRequester(context);
+    }
 
     /**
      * Create a new overlay instance for the given View
      */
     public TaskOverlayGo createOverlay(TaskThumbnailView thumbnailView) {
-        return new TaskOverlayGo(thumbnailView);
+        return new TaskOverlayGo(thumbnailView, mContentRequester);
     }
 
     /**
@@ -72,9 +75,12 @@
         private String mTaskPackageName;
         private String mWebUrl;
         private boolean mAssistPermissionsEnabled;
+        private AssistContentRequester mFactoryContentRequester;
 
-        private TaskOverlayGo(TaskThumbnailView taskThumbnailView) {
+        private TaskOverlayGo(TaskThumbnailView taskThumbnailView,
+                AssistContentRequester assistContentRequester) {
             super(taskThumbnailView);
+            mFactoryContentRequester = assistContentRequester;
         }
 
         /**
@@ -105,9 +111,7 @@
             }
 
             int taskId = task.key.id;
-            AssistContentRequester contentRequester =
-                    new AssistContentRequester(mApplicationContext);
-            contentRequester.requestAssistContent(taskId, this::onAssistContentReceived);
+            mFactoryContentRequester.requestAssistContent(taskId, this::onAssistContentReceived);
         }
 
         /** Provide Assist Content to the overlay. */
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index dd63cfa..d9c33ae 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -45,8 +45,9 @@
 
     <!-- These speeds are in dp/s -->
     <dimen name="max_task_dismiss_drag_velocity">2.25dp</dimen>
-    <dimen name="default_task_dismiss_drag_velocity">1.75dp</dimen>
-    <dimen name="default_task_dismiss_drag_velocity_grid">0.75dp</dimen>
+    <dimen name="default_task_dismiss_drag_velocity">1.5dp</dimen>
+    <dimen name="default_task_dismiss_drag_velocity_grid">1dp</dimen>
+    <dimen name="default_task_dismiss_drag_velocity_grid_focus_task">5dp</dimen>
 
     <dimen name="recents_page_spacing">16dp</dimen>
     <dimen name="recents_clear_all_deadzone_vertical_margin">70dp</dimen>
diff --git a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
index 34c08d6..43d03b3 100644
--- a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
+++ b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
@@ -1416,14 +1416,14 @@
                     : APP_LAUNCH_ALPHA_DOWN_DURATION;
             iconAlphaStart = hasSplashScreen && !hasDifferentAppIcon ? 0 : 1f;
 
-            // TOOD: Share value from shell when available.
-            final float windowIconSize = Utilities.pxFromSp(108, r.getDisplayMetrics());
+            final int windowIconSize = ResourceUtils.getDimenByName("starting_surface_icon_size",
+                    r, 108);
 
             cropCenterXStart = windowTargetBounds.centerX();
             cropCenterYStart = windowTargetBounds.centerY();
 
-            cropWidthStart = (int) windowIconSize;
-            cropHeightStart = (int) windowIconSize;
+            cropWidthStart = windowIconSize;
+            cropHeightStart = windowIconSize;
 
             cropWidthEnd = windowTargetBounds.width();
             cropHeightEnd = windowTargetBounds.height();
diff --git a/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java b/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java
index c6ea953..180af0b 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java
@@ -21,6 +21,7 @@
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
+import android.os.SystemClock;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.animation.Interpolator;
@@ -72,6 +73,7 @@
     private float mProgressMultiplier;
     private float mEndDisplacement;
     private FlingBlockCheck mFlingBlockCheck = new FlingBlockCheck();
+    private Float mOverrideVelocity = null;
 
     private TaskView mTaskBeingDragged;
 
@@ -268,6 +270,7 @@
             mCurrentAnimation.pause();
         }
         mFlingBlockCheck.unblockFling();
+        mOverrideVelocity = null;
     }
 
     @Override
@@ -283,19 +286,36 @@
             mFlingBlockCheck.onEvent();
         }
 
-        // Once halfway through task dismissal interpolation, switch from reversible dragging-task
-        // animation to playing the remaining task translation animations
-        if (mCurrentAnimation.getProgressFraction() < ANIMATION_PROGRESS_FRACTION_MIDPOINT) {
-            // Halve the value as we are animating the drag across the full length for only the
-            // first half of the progress
-            mCurrentAnimation.setPlayFraction(
-                    Utilities.boundToRange(totalDisplacement * mProgressMultiplier / 2, 0, 1));
+        if (isGoingUp) {
+            if (mCurrentAnimation.getProgressFraction() < ANIMATION_PROGRESS_FRACTION_MIDPOINT) {
+                // Halve the value when dismissing, as we are animating the drag across the full
+                // length for only the first half of the progress
+                mCurrentAnimation.setPlayFraction(
+                        Utilities.boundToRange(totalDisplacement * mProgressMultiplier / 2, 0, 1));
+            } else {
+                // Set mOverrideVelocity to control task dismiss velocity in onDragEnd
+                int velocityDimenId = R.dimen.default_task_dismiss_drag_velocity;
+                if (mRecentsView.showAsGrid()) {
+                    if (mTaskBeingDragged.isFocusedTask()) {
+                        velocityDimenId =
+                                R.dimen.default_task_dismiss_drag_velocity_grid_focus_task;
+                    } else {
+                        velocityDimenId = R.dimen.default_task_dismiss_drag_velocity_grid;
+                    }
+                }
+                mOverrideVelocity = -mTaskBeingDragged.getResources().getDimension(velocityDimenId);
+
+                // Once halfway through task dismissal interpolation, switch from reversible
+                // dragging-task animation to playing the remaining task translation animations
+                final long now = SystemClock.uptimeMillis();
+                MotionEvent upAction = MotionEvent.obtain(now, now,
+                        MotionEvent.ACTION_UP, 0.0f, 0.0f, 0);
+                mDetector.onTouchEvent(upAction);
+                upAction.recycle();
+            }
         } else {
-            float dragVelocity = -mTaskBeingDragged.getResources().getDimension(
-                    mRecentsView.showAsGrid() ? R.dimen.default_task_dismiss_drag_velocity_grid
-                            : R.dimen.default_task_dismiss_drag_velocity);
-            onDragEnd(dragVelocity);
-            return true;
+            mCurrentAnimation.setPlayFraction(
+                    Utilities.boundToRange(totalDisplacement * mProgressMultiplier, 0, 1));
         }
 
         return true;
@@ -303,6 +323,10 @@
 
     @Override
     public void onDragEnd(float velocity) {
+        if (mOverrideVelocity != null) {
+            velocity = mOverrideVelocity;
+            mOverrideVelocity = null;
+        }
         // Limit velocity, as very large scalar values make animations play too quickly
         float maxTaskDismissDragVelocity = mTaskBeingDragged.getResources().getDimension(
                 R.dimen.max_task_dismiss_drag_velocity);
diff --git a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
index be927e0..306032c 100644
--- a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
+++ b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
@@ -972,6 +972,10 @@
         }
         if (endTarget == HOME) {
             duration = HOME_DURATION;
+            // Early detach the nav bar once the endTarget is determined as HOME
+            if (mRecentsAnimationController != null) {
+                mRecentsAnimationController.detachNavigationBarFromApp(true);
+            }
         } else if (endTarget == RECENTS) {
             if (mRecentsView != null) {
                 int nearestPage = mRecentsView.getDestinationPage();
@@ -1496,7 +1500,7 @@
         if (LIVE_TILE.get()) {
             mStateCallback.setStateOnUiThread(STATE_CURRENT_TASK_FINISHED);
             if (mRecentsAnimationController != null) {
-                mRecentsAnimationController.getController().detachNavigationBarFromApp(true);
+                mRecentsAnimationController.detachNavigationBarFromApp(true);
             }
         } else if (!hasTargets() || mRecentsAnimationController == null) {
             // If there are no targets or the animation not started, then there is nothing to finish
diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationController.java b/quickstep/src/com/android/quickstep/RecentsAnimationController.java
index 462f714..50d0569 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationController.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationController.java
@@ -155,6 +155,14 @@
     }
 
     /**
+     * @see RecentsAnimationControllerCompat#detachNavigationBarFromApp
+     */
+    @UiThread
+    public void detachNavigationBarFromApp(boolean moveHomeToTop) {
+        UI_HELPER_EXECUTOR.execute(() -> mController.detachNavigationBarFromApp(moveHomeToTop));
+    }
+
+    /**
      * Sets the final surface transaction on a Task. This is used by Launcher to notify the system
      * that animating Activity to PiP has completed and the associated task surface should be
      * updated accordingly. This should be called before `finish`
diff --git a/quickstep/src/com/android/quickstep/util/AssistContentRequester.java b/quickstep/src/com/android/quickstep/util/AssistContentRequester.java
index 71c6382..b1e38eb 100644
--- a/quickstep/src/com/android/quickstep/util/AssistContentRequester.java
+++ b/quickstep/src/com/android/quickstep/util/AssistContentRequester.java
@@ -54,6 +54,7 @@
     private final IActivityTaskManager mActivityTaskManager;
     private final String mPackageName;
     private final Executor mCallbackExecutor;
+    private final Executor mSystemInteractionExecutor;
 
     // If system loses the callback, our internal cache of original callback will also get cleared.
     private final Map<Object, Callback> mPendingCallbacks =
@@ -63,6 +64,7 @@
         mActivityTaskManager = ActivityTaskManager.getService();
         mPackageName = context.getApplicationContext().getPackageName();
         mCallbackExecutor = Executors.MAIN_EXECUTOR;
+        mSystemInteractionExecutor = Executors.UI_HELPER_EXECUTOR;
     }
 
     /**
@@ -71,13 +73,16 @@
      * @param taskId to query for the content.
      * @param callback to call when the content is available, called on the main thread.
      */
-    public void requestAssistContent(int taskId, Callback callback) {
-        try {
-            mActivityTaskManager.requestAssistDataForTask(
-                    new AssistDataReceiver(callback, this), taskId, mPackageName);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Requesting assist content failed for task: " + taskId, e);
-        }
+    public void requestAssistContent(final int taskId, final Callback callback) {
+        // ActivityTaskManager interaction here is synchronous, so call off the main thread.
+        mSystemInteractionExecutor.execute(() -> {
+            try {
+                mActivityTaskManager.requestAssistDataForTask(
+                        new AssistDataReceiver(callback, this), taskId, mPackageName);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Requesting assist content failed for task: " + taskId, e);
+            }
+        });
     }
 
     private void executeOnMainExecutor(Runnable callback) {
diff --git a/res/color-night-v31/widgets_picker_scrim.xml b/res/color-night-v31/widgets_picker_scrim.xml
new file mode 100644
index 0000000..be7010b
--- /dev/null
+++ b/res/color-night-v31/widgets_picker_scrim.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2021, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+  <item android:color="@android:color/system_neutral1_900" android:alpha="0.8" />
+</selector>
diff --git a/res/color-v31/widgets_picker_scrim.xml b/res/color-v31/widgets_picker_scrim.xml
new file mode 100644
index 0000000..648824a
--- /dev/null
+++ b/res/color-v31/widgets_picker_scrim.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2021, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+  <item android:color="@android:color/system_neutral1_200" android:alpha="0.8" />
+</selector>
diff --git a/res/color/widgets_picker_scrim.xml b/res/color/widgets_picker_scrim.xml
new file mode 100644
index 0000000..1cf97f6
--- /dev/null
+++ b/res/color/widgets_picker_scrim.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2021, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="#000000" android:alpha="0.32" />
+</selector>
diff --git a/res/layout/add_item_confirmation_activity.xml b/res/layout/add_item_confirmation_activity.xml
index ddc9815..9439baf 100644
--- a/res/layout/add_item_confirmation_activity.xml
+++ b/res/layout/add_item_confirmation_activity.xml
@@ -31,7 +31,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:background="@drawable/add_item_dialog_background"
-        android:padding="24dp"
+        android:paddingTop="24dp"
         android:theme="?attr/widgetsTheme"
         android:layout_gravity="bottom"
         android:orientation="vertical">
@@ -42,6 +42,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:gravity="center_horizontal"
+            android:paddingHorizontal="24dp"
             android:textColor="?android:attr/textColorPrimary"
             android:textSize="24sp"
             android:ellipsize="end"
@@ -53,6 +54,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:gravity="center_horizontal"
+            android:paddingHorizontal="24dp"
             android:paddingTop="8dp"
             android:text="@string/add_item_request_drag_hint"
             android:textSize="14sp"
diff --git a/res/layout/widgets_full_sheet.xml b/res/layout/widgets_full_sheet.xml
index a01aa2c..dca3e79 100644
--- a/res/layout/widgets_full_sheet.xml
+++ b/res/layout/widgets_full_sheet.xml
@@ -25,8 +25,7 @@
         android:id="@+id/container"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:background="?android:attr/colorBackground"
-        android:elevation="4dp">
+        android:background="?android:attr/colorBackground">
 
         <TextView
             android:id="@+id/no_widgets_text"
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index 318dde1..115d3ae 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -36,7 +36,6 @@
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.DisplayMetrics;
-import android.util.Log;
 import android.util.SparseArray;
 import android.util.TypedValue;
 import android.util.Xml;
@@ -45,7 +44,6 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
-import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.launcher3.util.IntArray;
@@ -250,17 +248,10 @@
 
     private String initGrid(Context context, String gridName) {
         Info displayInfo = DisplayController.INSTANCE.get(context).getInfo();
-        // Determine if we have split display
-
-        boolean isTablet = false, isPhone = false;
-        for (WindowBounds bounds : displayInfo.supportedBounds) {
-            if (displayInfo.isTablet(bounds)) {
-                isTablet = true;
-            } else {
-                isPhone = true;
-            }
-        }
-        boolean isSplitDisplay = isPhone && isTablet && ENABLE_TWO_PANEL_HOME.get();
+        // Each screen has two profiles (portrait/landscape), so devices with four or more
+        // supported profiles implies two or more internal displays.
+        boolean isSplitDisplay =
+                displayInfo.supportedBounds.size() >= 4 && ENABLE_TWO_PANEL_HOME.get();
 
         ArrayList<DisplayOption> allOptions =
                 getPredefinedDeviceProfiles(context, gridName, isSplitDisplay);
diff --git a/src/com/android/launcher3/dragndrop/AddItemActivity.java b/src/com/android/launcher3/dragndrop/AddItemActivity.java
index 5dae5a6..b4288ce 100644
--- a/src/com/android/launcher3/dragndrop/AddItemActivity.java
+++ b/src/com/android/launcher3/dragndrop/AddItemActivity.java
@@ -59,6 +59,7 @@
 import com.android.launcher3.util.SystemUiController;
 import com.android.launcher3.views.AbstractSlideInView;
 import com.android.launcher3.views.BaseDragLayer;
+import com.android.launcher3.widget.AddItemWidgetsBottomSheet;
 import com.android.launcher3.widget.LauncherAppWidgetHost;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.NavigableAppWidgetHostView;
@@ -89,6 +90,7 @@
     private LauncherAppState mApp;
     private InvariantDeviceProfile mIdp;
     private BaseDragLayer<AddItemActivity> mDragLayer;
+    private AddItemWidgetsBottomSheet mSlideInView;
 
     private WidgetCell mWidgetCell;
 
@@ -124,8 +126,6 @@
         mDragLayer = findViewById(R.id.add_item_drag_layer);
         mDragLayer.recreateControllers();
         mDragLayer.setInsets(mDeviceProfile.getInsets());
-        AbstractSlideInView<AddItemActivity> slideInView = findViewById(R.id.add_item_bottom_sheet);
-        slideInView.addOnCloseListener(this);
         mWidgetCell = findViewById(R.id.widget_cell);
 
         if (mRequest.getRequestType() == PinItemRequest.REQUEST_TYPE_SHORTCUT) {
@@ -151,6 +151,9 @@
         TextView widgetAppName = findViewById(R.id.widget_appName);
         widgetAppName.setText(getApplicationInfo().labelRes);
 
+        mSlideInView = findViewById(R.id.add_item_bottom_sheet);
+        mSlideInView.addOnCloseListener(this);
+        mSlideInView.show();
         setupNavBarColor();
     }
 
@@ -279,7 +282,7 @@
      */
     public void onCancelClick(View v) {
         logCommand(LAUNCHER_ADD_EXTERNAL_ITEM_CANCELLED);
-        finish();
+        mSlideInView.close(/* animate= */ true);
     }
 
     /**
@@ -290,7 +293,7 @@
             ItemInstallQueue.INSTANCE.get(this).queueItem(mRequest.getShortcutInfo());
             logCommand(LAUNCHER_ADD_EXTERNAL_ITEM_PLACED_AUTOMATICALLY);
             mRequest.accept();
-            finish();
+            mSlideInView.close(/* animate= */ true);
             return;
         }
 
@@ -313,7 +316,7 @@
         mWidgetOptions.putInt(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetId);
         mRequest.accept(mWidgetOptions);
         logCommand(LAUNCHER_ADD_EXTERNAL_ITEM_PLACED_AUTOMATICALLY);
-        finish();
+        mSlideInView.close(/* animate= */ true);
     }
 
     @Override
diff --git a/src/com/android/launcher3/views/WidgetsEduView.java b/src/com/android/launcher3/views/WidgetsEduView.java
index e69cb5b..c6fa98a 100644
--- a/src/com/android/launcher3/views/WidgetsEduView.java
+++ b/src/com/android/launcher3/views/WidgetsEduView.java
@@ -35,8 +35,6 @@
 
     private static final int DEFAULT_CLOSE_DURATION = 200;
 
-    protected static final int FINAL_SCRIM_BG_COLOR = 0x88000000;
-
     private Rect mInsets = new Rect();
     private View mEduView;
 
@@ -87,7 +85,7 @@
 
     @Override
     protected int getScrimColor(Context context) {
-        return FINAL_SCRIM_BG_COLOR;
+        return context.getResources().getColor(R.color.widgets_picker_scrim);
     }
 
     @Override
diff --git a/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java b/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java
index 9e08303..804973f 100644
--- a/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java
+++ b/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java
@@ -23,8 +23,11 @@
 import android.content.res.Configuration;
 import android.graphics.Rect;
 import android.util.AttributeSet;
+import android.view.ViewGroup;
+import android.view.ViewParent;
 
 import com.android.launcher3.Insettable;
+import com.android.launcher3.R;
 import com.android.launcher3.dragndrop.AddItemActivity;
 import com.android.launcher3.views.AbstractSlideInView;
 
@@ -48,6 +51,17 @@
         mContent = this;
         mInsets = new Rect();
         mCurrentConfiguration = new Configuration(getResources().getConfiguration());
+    }
+
+    /**
+     * Attaches to activity container and animates open the bottom sheet.
+     */
+    public void show() {
+        ViewParent parent = getParent();
+        if (parent instanceof ViewGroup) {
+            ((ViewGroup) parent).removeView(this);
+        }
+        attachToContainer();
         animateOpen();
     }
 
@@ -95,4 +109,9 @@
         }
         mCurrentConfiguration.updateFrom(newConfig);
     }
+
+    @Override
+    protected int getScrimColor(Context context) {
+        return context.getResources().getColor(R.color.widgets_picker_scrim);
+    }
 }
diff --git a/src/com/android/launcher3/widget/BaseWidgetSheet.java b/src/com/android/launcher3/widget/BaseWidgetSheet.java
index e6791c3..edd42b4 100644
--- a/src/com/android/launcher3/widget/BaseWidgetSheet.java
+++ b/src/com/android/launcher3/widget/BaseWidgetSheet.java
@@ -15,8 +15,6 @@
  */
 package com.android.launcher3.widget;
 
-import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
-
 import android.content.Context;
 import android.graphics.Point;
 import android.graphics.Rect;
@@ -62,8 +60,7 @@
     }
 
     protected int getScrimColor(Context context) {
-        int alpha = context.getResources().getInteger(R.integer.extracted_color_gradient_alpha);
-        return setColorAlphaBound(context.getColor(R.color.wallpaper_popup_scrim), alpha);
+        return context.getResources().getColor(R.color.widgets_picker_scrim);
     }
 
     @Override
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
index 7963431..3936ec8 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
@@ -25,6 +25,7 @@
 import android.view.ViewGroup;
 import android.widget.TableRow;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.RecyclerView.Adapter;
@@ -48,8 +49,10 @@
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
+import java.util.OptionalInt;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 
 /**
  * Recycler view adapter for the widget tray.
@@ -87,6 +90,7 @@
                     || new PackageUserKey(entry.mPkgItem.packageName, entry.mPkgItem.user)
                             .equals(mWidgetsContentVisiblePackageUserKey);
     @Nullable private Predicate<WidgetsListBaseEntry> mFilter = null;
+    @Nullable private RecyclerView mRecyclerView;
 
     public WidgetsListAdapter(Context context, LayoutInflater layoutInflater,
             WidgetPreviewLoader widgetPreviewLoader, IconCache iconCache,
@@ -106,6 +110,16 @@
                         layoutInflater, /*onHeaderClickListener=*/ this, /* listAdapter= */ this));
     }
 
+    @Override
+    public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
+        mRecyclerView = recyclerView;
+    }
+
+    @Override
+    public void onDetachedFromRecyclerView(@NonNull RecyclerView recyclerView) {
+        mRecyclerView = null;
+    }
+
     public void setFilter(Predicate<WidgetsListBaseEntry> filter) {
         mFilter = filter;
     }
@@ -168,12 +182,10 @@
         mAllEntries.forEach(entry -> {
             if (entry instanceof WidgetsListHeaderEntry) {
                 ((WidgetsListHeaderEntry) entry).setIsWidgetListShown(
-                        new PackageUserKey(entry.mPkgItem.packageName, entry.mPkgItem.user)
-                                .equals(mWidgetsContentVisiblePackageUserKey));
+                        isHeaderForVisibleContent(entry));
             } else if (entry instanceof WidgetsListSearchHeaderEntry) {
                 ((WidgetsListSearchHeaderEntry) entry).setIsWidgetListShown(
-                        new PackageUserKey(entry.mPkgItem.packageName, entry.mPkgItem.user)
-                                .equals(mWidgetsContentVisiblePackageUserKey));
+                        isHeaderForVisibleContent(entry));
             }
         });
         List<WidgetsListBaseEntry> newVisibleEntries = mAllEntries.stream()
@@ -183,6 +195,13 @@
         mDiffReporter.process(mVisibleEntries, newVisibleEntries, mRowComparator);
     }
 
+    private boolean isHeaderForVisibleContent(WidgetsListBaseEntry entry) {
+        return (entry instanceof WidgetsListHeaderEntry
+                || entry instanceof WidgetsListSearchHeaderEntry)
+                && new PackageUserKey(entry.mPkgItem.packageName, entry.mPkgItem.user)
+                .equals(mWidgetsContentVisiblePackageUserKey);
+    }
+
     /**
      * Resets any expanded widget header.
      */
@@ -247,12 +266,40 @@
         if (showWidgets) {
             mWidgetsContentVisiblePackageUserKey = packageUserKey;
             updateVisibleEntries();
+            // Scroll the layout manager to the header position to keep it anchored to the same
+            // position.
+            scrollToSelectedHeaderPosition();
         } else if (packageUserKey.equals(mWidgetsContentVisiblePackageUserKey)) {
             mWidgetsContentVisiblePackageUserKey = null;
             updateVisibleEntries();
         }
     }
 
+    private void scrollToSelectedHeaderPosition() {
+        OptionalInt selectedHeaderPosition =
+                IntStream.range(0, mVisibleEntries.size())
+                        .filter(index -> isHeaderForVisibleContent(mVisibleEntries.get(index)))
+                        .findFirst();
+        RecyclerView.LayoutManager layoutManager =
+                mRecyclerView == null ? null : mRecyclerView.getLayoutManager();
+        if (!selectedHeaderPosition.isPresent() || layoutManager == null) {
+            return;
+        }
+
+        // Scroll to the selected header position. LinearLayoutManager scrolls the minimum distance
+        // necessary, so this will keep the selected header in place during clicks, without
+        // interrupting the animation.
+        int position = selectedHeaderPosition.getAsInt();
+        if (position == mVisibleEntries.size() - 2) {
+            // If the selected header is in the last position (-1 for the content), then scroll to
+            // the final position so the last list of widgets will show.
+            layoutManager.scrollToPosition(mVisibleEntries.size() - 1);
+        } else {
+            // Otherwise, scroll to the position of the selected header.
+            layoutManager.scrollToPosition(position);
+        }
+    }
+
     /**
      * Sets the max horizontal spans that are allowed for grouping more than one widgets in a table
      * row.
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
index e30e245..090362b 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
@@ -154,8 +154,25 @@
             return -1;
         }
 
-        View child = getChildAt(0);
-        int rowIndex = getChildPosition(child);
+        int rowIndex = -1;
+        View child = null;
+
+        LayoutManager layoutManager = getLayoutManager();
+        if (layoutManager instanceof LinearLayoutManager) {
+            // Use the LayoutManager as the source of truth for visible positions. During
+            // animations, the view group child may not correspond to the visible views that appear
+            // at the top.
+            rowIndex = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
+            child = layoutManager.findViewByPosition(rowIndex);
+        }
+
+        if (child == null) {
+            // If the layout manager returns null for any reason, which can happen before layout
+            // has occurred for the position, then look at the child of this view as a ViewGroup.
+            child = getChildAt(0);
+            rowIndex = getChildPosition(child);
+        }
+
         for (int i = 0; i < getChildCount(); i++) {
             View view = getChildAt(i);
             if (view instanceof TableLayout) {