diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index 35d7394..129b88e 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -548,15 +548,43 @@
     }
 
     /** Start multiple tasks in split-screen simultaneously. */
-    public void startTasks(int mainTaskId, Bundle mainOptions, int sideTaskId, Bundle sideOptions,
-            @SplitConfigurationOptions.StagePosition int sidePosition, float splitRatio,
+    public void startTasks(int taskId1, Bundle options1, int taskId2, Bundle options2,
+            @SplitConfigurationOptions.StagePosition int splitPosition, float splitRatio,
             RemoteTransitionCompat remoteTransition, InstanceId instanceId) {
         if (mSystemUiProxy != null) {
             try {
-                mSplitScreen.startTasks(mainTaskId, mainOptions, sideTaskId, sideOptions,
-                        sidePosition, splitRatio, remoteTransition.getTransition(), instanceId);
+                mSplitScreen.startTasks(taskId1, options1, taskId2, options2, splitPosition,
+                        splitRatio, remoteTransition.getTransition(), instanceId);
             } catch (RemoteException e) {
-                Log.w(TAG, "Failed call startTask");
+                Log.w(TAG, "Failed call startTasks");
+            }
+        }
+    }
+
+    public void startIntentAndTask(PendingIntent pendingIntent, Intent fillInIntent,
+            Bundle options1, int taskId, Bundle options2,
+            @SplitConfigurationOptions.StagePosition int splitPosition, float splitRatio,
+            RemoteTransitionCompat remoteTransition, InstanceId instanceId) {
+        if (mSystemUiProxy != null) {
+            try {
+                mSplitScreen.startIntentAndTask(pendingIntent, fillInIntent, options1,
+                        taskId, options2, splitPosition, splitRatio,
+                        remoteTransition.getTransition(), instanceId);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call startIntentAndTask");
+            }
+        }
+    }
+
+    public void startShortcutAndTask(ShortcutInfo shortcutInfo, Bundle options1, int taskId,
+            Bundle options2, @SplitConfigurationOptions.StagePosition int splitPosition,
+            float splitRatio, RemoteTransitionCompat remoteTransition, InstanceId instanceId) {
+        if (mSystemUiProxy != null) {
+            try {
+                mSplitScreen.startShortcutAndTask(shortcutInfo, options1, taskId, options2,
+                        splitPosition, splitRatio, remoteTransition.getTransition(), instanceId);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call startShortcutAndTask");
             }
         }
     }
@@ -564,13 +592,13 @@
     /**
      * Start multiple tasks in split-screen simultaneously.
      */
-    public void startTasksWithLegacyTransition(int mainTaskId, Bundle mainOptions, int sideTaskId,
-            Bundle sideOptions, @SplitConfigurationOptions.StagePosition int sidePosition,
+    public void startTasksWithLegacyTransition(int taskId1, Bundle options1, int taskId2,
+            Bundle options2, @SplitConfigurationOptions.StagePosition int splitPosition,
             float splitRatio, RemoteAnimationAdapter adapter, InstanceId instanceId) {
         if (mSystemUiProxy != null) {
             try {
-                mSplitScreen.startTasksWithLegacyTransition(mainTaskId, mainOptions, sideTaskId,
-                        sideOptions, sidePosition, splitRatio, adapter, instanceId);
+                mSplitScreen.startTasksWithLegacyTransition(taskId1, options1, taskId2, options2,
+                        splitPosition, splitRatio, adapter, instanceId);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startTasksWithLegacyTransition");
             }
@@ -578,28 +606,26 @@
     }
 
     public void startIntentAndTaskWithLegacyTransition(PendingIntent pendingIntent,
-            Intent fillInIntent, int taskId, Bundle mainOptions, Bundle sideOptions,
-            @SplitConfigurationOptions.StagePosition int sidePosition, float splitRatio,
+            Intent fillInIntent, Bundle options1, int taskId, Bundle options2,
+            @SplitConfigurationOptions.StagePosition int splitPosition, float splitRatio,
             RemoteAnimationAdapter adapter, InstanceId instanceId) {
         if (mSystemUiProxy != null) {
             try {
                 mSplitScreen.startIntentAndTaskWithLegacyTransition(pendingIntent, fillInIntent,
-                        taskId, mainOptions, sideOptions, sidePosition, splitRatio, adapter,
-                        instanceId);
+                        options1, taskId, options2, splitPosition, splitRatio, adapter, instanceId);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startIntentAndTaskWithLegacyTransition");
             }
         }
     }
 
-    public void startShortcutAndTaskWithLegacyTransition(ShortcutInfo shortcutInfo, int taskId,
-            Bundle mainOptions, Bundle sideOptions,
-            @SplitConfigurationOptions.StagePosition int sidePosition, float splitRatio,
-            RemoteAnimationAdapter adapter, InstanceId instanceId) {
+    public void startShortcutAndTaskWithLegacyTransition(ShortcutInfo shortcutInfo, Bundle options1,
+            int taskId, Bundle options2, @SplitConfigurationOptions.StagePosition int splitPosition,
+            float splitRatio, RemoteAnimationAdapter adapter, InstanceId instanceId) {
         if (mSystemUiProxy != null) {
             try {
-                mSplitScreen.startShortcutAndTaskWithLegacyTransition(shortcutInfo, taskId,
-                        mainOptions, sideOptions, sidePosition, splitRatio, adapter, instanceId);
+                mSplitScreen.startShortcutAndTaskWithLegacyTransition(shortcutInfo, options1,
+                        taskId, options2, splitPosition, splitRatio, adapter, instanceId);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startShortcutAndTaskWithLegacyTransition");
             }
diff --git a/quickstep/src/com/android/quickstep/TaskViewUtils.java b/quickstep/src/com/android/quickstep/TaskViewUtils.java
index e7173f5..7d3d8a2 100644
--- a/quickstep/src/com/android/quickstep/TaskViewUtils.java
+++ b/quickstep/src/com/android/quickstep/TaskViewUtils.java
@@ -15,7 +15,6 @@
  */
 package com.android.quickstep;
 
-import static android.app.ActivityTaskManager.INVALID_TASK_ID;
 import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER;
 import static android.view.WindowManager.TRANSIT_OPEN;
 import static android.view.WindowManager.TRANSIT_TO_FRONT;
@@ -425,8 +424,10 @@
         TransitionInfo.Change splitRoot2 = null;
         for (int i = 0; i < transitionInfo.getChanges().size(); ++i) {
             final TransitionInfo.Change change = transitionInfo.getChanges().get(i);
-            final int taskId = change.getTaskInfo() != null ? change.getTaskInfo().taskId : -1;
+            if (change.getTaskInfo() == null) continue;
+            final int taskId = change.getTaskInfo().taskId;
             final int mode = change.getMode();
+
             // Find the target tasks' root tasks since those are the split stages that need to
             // be animated (the tasks themselves are children and thus inherit animation).
             if (taskId == initialTaskId || taskId == secondTaskId) {
@@ -439,7 +440,7 @@
                             + "root of " + taskId + " is already visible or has broken hierarchy.");
                 }
             }
-            if (taskId == initialTaskId && initialTaskId != INVALID_TASK_ID) {
+            if (taskId == initialTaskId) {
                 splitRoot1 = transitionInfo.getChange(change.getParent());
             }
             if (taskId == secondTaskId) {
diff --git a/quickstep/src/com/android/quickstep/util/PhoneSplitToConfirmTimings.java b/quickstep/src/com/android/quickstep/util/PhoneSplitToConfirmTimings.java
index 9e7351a..3d9e09e 100644
--- a/quickstep/src/com/android/quickstep/util/PhoneSplitToConfirmTimings.java
+++ b/quickstep/src/com/android/quickstep/util/PhoneSplitToConfirmTimings.java
@@ -16,10 +16,6 @@
 
 package com.android.quickstep.util;
 
-import static com.android.launcher3.anim.Interpolators.EMPHASIZED;
-
-import android.view.animation.Interpolator;
-
 /**
  * Timings for the OverviewSplitSelect > confirmed animation on phones.
  */
@@ -33,8 +29,4 @@
     public int getStagedRectSlideEnd() { return 333; }
 
     public int getDuration() { return PHONE_CONFIRM_DURATION; }
-    public Interpolator getStagedRectXInterpolator() { return EMPHASIZED; }
-    public Interpolator getStagedRectYInterpolator() { return EMPHASIZED; }
-    public Interpolator getStagedRectScaleXInterpolator() { return EMPHASIZED; }
-    public Interpolator getStagedRectScaleYInterpolator() { return EMPHASIZED; }
 }
diff --git a/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java b/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
index efbe783..f07f990 100644
--- a/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
+++ b/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
@@ -22,8 +22,6 @@
 import static com.android.launcher3.Utilities.postAsyncCallback;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.launcher3.util.SplitConfigurationOptions.DEFAULT_SPLIT_RATIO;
-import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_BOTTOM_OR_RIGHT;
-import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT;
 
 import android.annotation.NonNull;
 import android.app.ActivityOptions;
@@ -216,22 +214,36 @@
             @Nullable InstanceId shellInstanceId) {
         TestLogging.recordEvent(
                 TestProtocol.SEQUENCE_MAIN, "launchSplitTasks");
-        // Assume initial task is for top/left part of screen
-        final int[] taskIds = stagePosition == STAGE_POSITION_TOP_OR_LEFT
-                ? new int[]{taskId1, taskId2}
-                : new int[]{taskId2, taskId1};
+        final ActivityOptions options1 = ActivityOptions.makeBasic();
+        if (freezeTaskList) {
+            options1.setFreezeRecentTasksReordering();
+        }
         if (TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
-            RemoteSplitLaunchTransitionRunner animationRunner =
+            final RemoteSplitLaunchTransitionRunner animationRunner =
                     new RemoteSplitLaunchTransitionRunner(taskId1, taskPendingIntent, taskId2,
                             callback);
-            mSystemUiProxy.startTasks(taskIds[0], null /* mainOptions */, taskIds[1],
-                    null /* sideOptions */, STAGE_POSITION_BOTTOM_OR_RIGHT, splitRatio,
-                    new RemoteTransitionCompat(animationRunner, MAIN_EXECUTOR,
-                            ActivityThread.currentActivityThread().getApplicationThread()),
-                    shellInstanceId);
-            // TODO(b/237635859): handle intent/shortcut + task with shell transition
+            final RemoteTransitionCompat remoteTransition = new RemoteTransitionCompat(
+                    animationRunner, MAIN_EXECUTOR,
+                    ActivityThread.currentActivityThread().getApplicationThread());
+            if (taskPendingIntent == null) {
+                mSystemUiProxy.startTasks(taskId1, options1.toBundle(), taskId2,
+                        null /* options2 */, stagePosition, splitRatio, remoteTransition,
+                        shellInstanceId);
+            } else {
+                final ShortcutInfo shortcutInfo = getShortcutInfo(mInitialTaskIntent,
+                        taskPendingIntent.getCreatorUserHandle());
+                if (shortcutInfo != null) {
+                    mSystemUiProxy.startShortcutAndTask(shortcutInfo,
+                            options1.toBundle(), taskId2, null /* options2 */, stagePosition,
+                            splitRatio, remoteTransition, shellInstanceId);
+                } else {
+                    mSystemUiProxy.startIntentAndTask(taskPendingIntent,
+                            fillInIntent, options1.toBundle(), taskId2, null /* options2 */,
+                            stagePosition, splitRatio, remoteTransition, shellInstanceId);
+                }
+            }
         } else {
-            RemoteSplitLaunchAnimationRunner animationRunner =
+            final RemoteSplitLaunchAnimationRunner animationRunner =
                     new RemoteSplitLaunchAnimationRunner(taskId1, taskPendingIntent, taskId2,
                             callback);
             final RemoteAnimationAdapter adapter = new RemoteAnimationAdapter(
@@ -239,24 +251,20 @@
                     300, 150,
                     ActivityThread.currentActivityThread().getApplicationThread());
 
-            ActivityOptions mainOpts = ActivityOptions.makeBasic();
-            if (freezeTaskList) {
-                mainOpts.setFreezeRecentTasksReordering();
-            }
             if (taskPendingIntent == null) {
-                mSystemUiProxy.startTasksWithLegacyTransition(taskIds[0], mainOpts.toBundle(),
-                        taskIds[1], null /* sideOptions */, STAGE_POSITION_BOTTOM_OR_RIGHT,
-                        splitRatio, adapter, shellInstanceId);
+                mSystemUiProxy.startTasksWithLegacyTransition(taskId1, options1.toBundle(),
+                        taskId2, null /* options2 */, stagePosition, splitRatio, adapter,
+                        shellInstanceId);
             } else {
                 final ShortcutInfo shortcutInfo = getShortcutInfo(mInitialTaskIntent,
                         taskPendingIntent.getCreatorUserHandle());
                 if (shortcutInfo != null) {
-                    mSystemUiProxy.startShortcutAndTaskWithLegacyTransition(shortcutInfo, taskId2,
-                            mainOpts.toBundle(), null /* sideOptions */, stagePosition, splitRatio,
-                            adapter, shellInstanceId);
+                    mSystemUiProxy.startShortcutAndTaskWithLegacyTransition(shortcutInfo,
+                            options1.toBundle(), taskId2, null /* options2 */, stagePosition,
+                            splitRatio, adapter, shellInstanceId);
                 } else {
                     mSystemUiProxy.startIntentAndTaskWithLegacyTransition(taskPendingIntent,
-                            fillInIntent, taskId2, mainOpts.toBundle(), null /* sideOptions */,
+                            fillInIntent, options1.toBundle(), taskId2, null /* options2 */,
                             stagePosition, splitRatio, adapter, shellInstanceId);
                 }
             }
diff --git a/quickstep/src/com/android/quickstep/util/SplitToConfirmTimings.java b/quickstep/src/com/android/quickstep/util/SplitToConfirmTimings.java
index 3026e98..f5b00cf 100644
--- a/quickstep/src/com/android/quickstep/util/SplitToConfirmTimings.java
+++ b/quickstep/src/com/android/quickstep/util/SplitToConfirmTimings.java
@@ -16,6 +16,8 @@
 
 package com.android.quickstep.util;
 
+import static com.android.launcher3.anim.Interpolators.EMPHASIZED;
+
 import android.view.animation.Interpolator;
 
 /**
@@ -33,12 +35,12 @@
     // Common timings
     public int getInstructionsFadeStart() { return 0; }
     public int getInstructionsFadeEnd() { return 67; }
+    public Interpolator getStagedRectXInterpolator() { return EMPHASIZED; }
+    public Interpolator getStagedRectYInterpolator() { return EMPHASIZED; }
+    public Interpolator getStagedRectScaleXInterpolator() { return EMPHASIZED; }
+    public Interpolator getStagedRectScaleYInterpolator() { return EMPHASIZED; }
 
     abstract public int getDuration();
-    abstract public Interpolator getStagedRectXInterpolator();
-    abstract public Interpolator getStagedRectYInterpolator();
-    abstract public Interpolator getStagedRectScaleXInterpolator();
-    abstract public Interpolator getStagedRectScaleYInterpolator();
 
     public float getInstructionsFadeStartOffset() {
         return (float) getInstructionsFadeStart() / getDuration();
diff --git a/quickstep/src/com/android/quickstep/util/TabletSplitToConfirmTimings.java b/quickstep/src/com/android/quickstep/util/TabletSplitToConfirmTimings.java
index 3ea8466..580cc99 100644
--- a/quickstep/src/com/android/quickstep/util/TabletSplitToConfirmTimings.java
+++ b/quickstep/src/com/android/quickstep/util/TabletSplitToConfirmTimings.java
@@ -16,10 +16,6 @@
 
 package com.android.quickstep.util;
 
-import static com.android.launcher3.anim.Interpolators.LINEAR;
-
-import android.view.animation.Interpolator;
-
 /**
  * Timings for the OverviewSplitSelect > confirmed animation on tablets.
  */
@@ -33,8 +29,4 @@
     public int getStagedRectSlideEnd() { return 383; }
 
     public int getDuration() { return TABLET_CONFIRM_DURATION; }
-    public Interpolator getStagedRectXInterpolator() { return LINEAR; }
-    public Interpolator getStagedRectYInterpolator() { return LINEAR; }
-    public Interpolator getStagedRectScaleXInterpolator() { return LINEAR; }
-    public Interpolator getStagedRectScaleYInterpolator() { return LINEAR; }
 }
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 5b4415a..0e0acf0 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -1885,6 +1885,8 @@
                 mActionsView.getVisibilityAlpha(), MultiValueAlpha.VALUE, alphaValue);
         mActionsViewAlphaAnimatorFinalValue = alphaValue;
         mActionsViewAlphaAnimator.setDuration(duration);
+        // Set autocancel to prevent race-conditiony setting of alpha from other animations
+        mActionsViewAlphaAnimator.setAutoCancel(true);
         mActionsViewAlphaAnimator.start();
     }
 
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index a20ff8c..58e85fe 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -85,6 +85,7 @@
 import java.util.Locale;
 import java.util.concurrent.TimeUnit;
 import java.util.function.Supplier;
+import java.util.stream.Collectors;
 
 public class LauncherProvider extends ContentProvider {
     private static final String TAG = "LauncherProvider";
@@ -944,16 +945,28 @@
             final IntSet validWidgets = IntSet.wrap(LauncherDbUtils.queryIntArray(false, db,
                     Favorites.TABLE_NAME, Favorites.APPWIDGET_ID,
                     "itemType=" + Favorites.ITEM_TYPE_APPWIDGET, null, null));
+            boolean isAnyWidgetRemoved = false;
             for (int widgetId : allWidgets) {
                 if (!validWidgets.contains(widgetId)) {
                     try {
                         FileLog.d(TAG, "Deleting invalid widget " + widgetId);
                         host.deleteAppWidgetId(widgetId);
+                        isAnyWidgetRemoved = true;
                     } catch (RuntimeException e) {
                         // Ignore
                     }
                 }
             }
+            if (isAnyWidgetRemoved) {
+                final String allWidgetsIds = Arrays.stream(allWidgets).mapToObj(String::valueOf)
+                        .collect(Collectors.joining(",", "[", "]"));
+                final String validWidgetsIds = Arrays.stream(
+                        validWidgets.getArray().toArray()).mapToObj(String::valueOf)
+                        .collect(Collectors.joining(",", "[", "]"));
+                FileLog.d(TAG, "One or more widgets was removed. db_path=" + db.getPath()
+                        + " allWidgetsIds=" + allWidgetsIds
+                        + ", validWidgetsIds=" + validWidgetsIds);
+            }
         }
 
         /**