diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
index 01153d5..17fb959 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
@@ -715,9 +715,9 @@
 
     /**
      * Signal from SysUI indicating that a non-mirroring display was just connected to the
-     * primary device.
+     * primary device or a previously mirroring display is switched to extended mode.
      */
-    public void onDisplayReady(int displayId) {
+    public void onDisplayAddSystemDecorations(int displayId) {
     }
 
     /**
diff --git a/quickstep/src/com/android/quickstep/SimpleOrientationTouchTransformer.java b/quickstep/src/com/android/quickstep/SimpleOrientationTouchTransformer.java
index 5264643..d2a491d 100644
--- a/quickstep/src/com/android/quickstep/SimpleOrientationTouchTransformer.java
+++ b/quickstep/src/com/android/quickstep/SimpleOrientationTouchTransformer.java
@@ -22,35 +22,35 @@
 import android.content.Context;
 import android.view.MotionEvent;
 
+import com.android.launcher3.dagger.ApplicationContext;
+import com.android.launcher3.dagger.LauncherAppSingleton;
+import com.android.launcher3.util.DaggerSingletonObject;
+import com.android.launcher3.util.DaggerSingletonTracker;
 import com.android.launcher3.util.DisplayController;
-import com.android.launcher3.util.MainThreadInitializedObject;
-import com.android.launcher3.util.SafeCloseable;
+import com.android.quickstep.dagger.QuickstepBaseAppComponent;
 
+import javax.inject.Inject;
+
+@LauncherAppSingleton
 public class SimpleOrientationTouchTransformer implements
-        DisplayController.DisplayInfoChangeListener, SafeCloseable {
+        DisplayController.DisplayInfoChangeListener {
 
-    public static final MainThreadInitializedObject<SimpleOrientationTouchTransformer> INSTANCE =
-            new MainThreadInitializedObject<>(SimpleOrientationTouchTransformer::new);
+    public static final DaggerSingletonObject<SimpleOrientationTouchTransformer> INSTANCE =
+            new DaggerSingletonObject<>(
+                    QuickstepBaseAppComponent::getSimpleOrientationTouchTransformer);
 
-    private final Context mContext;
     private OrientationRectF mOrientationRectF;
     private OrientationRectF mTouchingOrientationRectF;
     private int mViewRotation;
 
-    public SimpleOrientationTouchTransformer(Context context) {
-        this(context, DisplayController.INSTANCE.get(context));
-    }
-
-    @androidx.annotation.VisibleForTesting
-    public SimpleOrientationTouchTransformer(Context context, DisplayController displayController) {
-        mContext = context;
+    @Inject
+    public SimpleOrientationTouchTransformer(@ApplicationContext Context context,
+            DisplayController displayController,
+            DaggerSingletonTracker tracker) {
         displayController.addChangeListener(this);
-        onDisplayInfoChanged(context, displayController.getInfo(), CHANGE_ALL);
-    }
+        tracker.addCloseable(() -> displayController.removeChangeListener(this));
 
-    @Override
-    public void close() {
-        DisplayController.INSTANCE.get(mContext).removeChangeListener(this);
+        onDisplayInfoChanged(context, displayController.getInfo(), CHANGE_ALL);
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index 516b24c..51e59ff 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -301,10 +301,10 @@
 
         @BinderThread
         @Override
-        public void onDisplayReady(int displayId) {
+        public void onDisplayAddSystemDecorations(int displayId) {
             MAIN_EXECUTOR.execute(() -> executeForTouchInteractionService(
-                    tis -> executeForTaskbarManager(
-                            taskbarManager -> taskbarManager.onDisplayReady(displayId))));
+                    tis -> executeForTaskbarManager(taskbarManager ->
+                            taskbarManager.onDisplayAddSystemDecorations(displayId))));
         }
 
         @BinderThread
diff --git a/quickstep/src/com/android/quickstep/dagger/QuickstepBaseAppComponent.java b/quickstep/src/com/android/quickstep/dagger/QuickstepBaseAppComponent.java
index c875251..adc45ae 100644
--- a/quickstep/src/com/android/quickstep/dagger/QuickstepBaseAppComponent.java
+++ b/quickstep/src/com/android/quickstep/dagger/QuickstepBaseAppComponent.java
@@ -23,6 +23,7 @@
 import com.android.quickstep.OverviewComponentObserver;
 import com.android.quickstep.RecentsAnimationDeviceState;
 import com.android.quickstep.RotationTouchHelper;
+import com.android.quickstep.SimpleOrientationTouchTransformer;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TopTaskTracker;
 import com.android.quickstep.fallback.window.RecentsDisplayModel;
@@ -61,4 +62,7 @@
     RecentsAnimationDeviceState getRecentsAnimationDeviceState();
 
     SettingsChangeLogger getSettingsChangeLogger();
+
+    SimpleOrientationTouchTransformer getSimpleOrientationTouchTransformer();
+
 }
diff --git a/quickstep/tests/src/com/android/quickstep/DesktopSystemShortcutTest.kt b/quickstep/tests/src/com/android/quickstep/DesktopSystemShortcutTest.kt
index 52bd2ea..76aab39 100644
--- a/quickstep/tests/src/com/android/quickstep/DesktopSystemShortcutTest.kt
+++ b/quickstep/tests/src/com/android/quickstep/DesktopSystemShortcutTest.kt
@@ -19,6 +19,7 @@
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.platform.test.annotations.EnableFlags
 import android.view.Display.DEFAULT_DISPLAY
 import androidx.test.platform.app.InstrumentationRegistry
@@ -72,7 +73,7 @@
     private val overlayFactory: TaskOverlayFactory = mock()
     private val factory: TaskShortcutFactory =
         DesktopSystemShortcut.createFactory(abstractFloatingViewHelper)
-    private val context: Context = InstrumentationRegistry.getInstrumentation().targetContext
+    private val context: Context = spy(InstrumentationRegistry.getInstrumentation().targetContext)
 
     private lateinit var mockitoSession: StaticMockitoSession
 
@@ -151,6 +152,32 @@
     }
 
     @Test
+    @EnableFlags(Flags.FLAG_ENABLE_DESKTOP_WINDOWING_MODALS_POLICY)
+    fun createDesktopTaskShortcutFactory_defaultHomeTask() {
+        val packageManager: PackageManager = mock()
+        val homeActivities = ComponentName("defaultHomePackage", /* class */ "")
+        whenever(context.packageManager).thenReturn(packageManager)
+        whenever(packageManager.getHomeActivities(any())).thenReturn(homeActivities)
+        val taskKey =
+            TaskKey(
+                /* id */ 1,
+                /* windowingMode */ 0,
+                Intent(),
+                homeActivities,
+                /* userId */ 0,
+                /* lastActiveTime */ 2000,
+                DEFAULT_DISPLAY,
+                homeActivities,
+                /* numActivities */ 1,
+                /* isTopActivityNoDisplay */ false,
+                /* isActivityStackTransparent */ false,
+            )
+        val taskContainer = createTaskContainer(Task(taskKey).apply { isDockable = true })
+        val shortcuts = factory.getShortcuts(launcher, taskContainer)
+        assertThat(shortcuts).isNull()
+    }
+
+    @Test
     fun createDesktopTaskShortcutFactory_undockable() {
         val unDockableTask = createTask().apply { isDockable = false }
         val taskContainer = createTaskContainer(unDockableTask)
diff --git a/quickstep/tests/src/com/android/quickstep/ExternalDisplaySystemShortcutTest.kt b/quickstep/tests/src/com/android/quickstep/ExternalDisplaySystemShortcutTest.kt
index 4111dec..818841a 100644
--- a/quickstep/tests/src/com/android/quickstep/ExternalDisplaySystemShortcutTest.kt
+++ b/quickstep/tests/src/com/android/quickstep/ExternalDisplaySystemShortcutTest.kt
@@ -19,6 +19,7 @@
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.platform.test.annotations.EnableFlags
 import android.platform.test.flag.junit.SetFlagsRule
 import android.view.Display.DEFAULT_DISPLAY
@@ -75,7 +76,7 @@
     private val overlayFactory: TaskOverlayFactory = mock()
     private val factory: TaskShortcutFactory =
         ExternalDisplaySystemShortcut.createFactory(abstractFloatingViewHelper)
-    private val context: Context = InstrumentationRegistry.getInstrumentation().targetContext
+    private val context: Context = spy(InstrumentationRegistry.getInstrumentation().targetContext)
 
     private lateinit var mockitoSession: StaticMockitoSession
 
@@ -161,6 +162,35 @@
     }
 
     @Test
+    @EnableFlags(
+        Flags.FLAG_MOVE_TO_EXTERNAL_DISPLAY_SHORTCUT,
+        Flags.FLAG_ENABLE_DESKTOP_WINDOWING_MODALS_POLICY,
+    )
+    fun createExternalDisplayTaskShortcut_defaultHomeTask() {
+        val packageManager: PackageManager = mock()
+        val homeActivities = ComponentName("defaultHomePackage", /* class */ "")
+        whenever(context.packageManager).thenReturn(packageManager)
+        whenever(packageManager.getHomeActivities(any())).thenReturn(homeActivities)
+        val taskKey =
+            TaskKey(
+                /* id */ 1,
+                /* windowingMode */ 0,
+                Intent(),
+                homeActivities,
+                /* userId */ 0,
+                /* lastActiveTime */ 2000,
+                DEFAULT_DISPLAY,
+                homeActivities,
+                /* numActivities */ 1,
+                /* isTopActivityNoDisplay */ false,
+                /* isActivityStackTransparent */ false,
+            )
+        val taskContainer = createTaskContainer(Task(taskKey).apply { isDockable = true })
+        val shortcuts = factory.getShortcuts(launcher, taskContainer)
+        assertThat(shortcuts).isNull()
+    }
+
+    @Test
     @EnableFlags(Flags.FLAG_MOVE_TO_EXTERNAL_DISPLAY_SHORTCUT)
     fun externalDisplaySystemShortcutClicked() {
         val task = createTask()
diff --git a/quickstep/tests/src/com/android/quickstep/OrientationTouchTransformerTest.java b/quickstep/tests/src/com/android/quickstep/OrientationTouchTransformerTest.java
index ff0ad53..a0ec635 100644
--- a/quickstep/tests/src/com/android/quickstep/OrientationTouchTransformerTest.java
+++ b/quickstep/tests/src/com/android/quickstep/OrientationTouchTransformerTest.java
@@ -43,6 +43,7 @@
 import androidx.test.filters.SmallTest;
 
 import com.android.launcher3.testing.shared.ResourceUtils;
+import com.android.launcher3.util.DaggerSingletonTracker;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.RotationUtils;
 import com.android.launcher3.util.WindowBounds;
@@ -301,7 +302,8 @@
         final DisplayController displayController = mock(DisplayController.class);
         doReturn(mInfo).when(displayController).getInfo();
         final SimpleOrientationTouchTransformer transformer =
-                new SimpleOrientationTouchTransformer(getApplicationContext(), displayController);
+                new SimpleOrientationTouchTransformer(getApplicationContext(), displayController,
+                        mock(DaggerSingletonTracker.class));
         final MotionEvent move1 = generateMotionEvent(MotionEvent.ACTION_MOVE, 100, 10);
         transformer.transform(move1, Surface.ROTATION_90);
         // The position is transformed to 90 degree.
diff --git a/src/com/android/launcher3/util/DisplayController.java b/src/com/android/launcher3/util/DisplayController.java
index 9472f5f..475dc04 100644
--- a/src/com/android/launcher3/util/DisplayController.java
+++ b/src/com/android/launcher3/util/DisplayController.java
@@ -69,6 +69,7 @@
 import java.util.Objects;
 import java.util.Set;
 import java.util.StringJoiner;
+import java.util.concurrent.CopyOnWriteArrayList;
 
 import javax.inject.Inject;
 
@@ -114,7 +115,8 @@
 
     // The callback in this listener updates DeviceProfile, which other listeners might depend on
     private DisplayInfoChangeListener mPriorityListener;
-    private final ArrayList<DisplayInfoChangeListener> mListeners = new ArrayList<>();
+    private final CopyOnWriteArrayList<DisplayInfoChangeListener> mListeners =
+            new CopyOnWriteArrayList<>();
 
     // We will register broadcast receiver on main thread to ensure not missing changes on
     // TARGET_OVERLAY_PACKAGE and ACTION_OVERLAY_CHANGED.
diff --git a/src/com/android/launcher3/util/MSDLPlayerWrapper.java b/src/com/android/launcher3/util/MSDLPlayerWrapper.java
index 8a1d923..fc3fa72 100644
--- a/src/com/android/launcher3/util/MSDLPlayerWrapper.java
+++ b/src/com/android/launcher3/util/MSDLPlayerWrapper.java
@@ -16,8 +16,6 @@
 
 package com.android.launcher3.util;
 
-import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
-
 import android.content.Context;
 import android.os.Vibrator;
 
@@ -50,7 +48,9 @@
     @Inject
     public MSDLPlayerWrapper(@ApplicationContext Context context) {
         Vibrator vibrator = context.getSystemService(Vibrator.class);
-        mMSDLPlayer = MSDLPlayer.Companion.createPlayer(vibrator, UI_HELPER_EXECUTOR, null);
+        mMSDLPlayer = MSDLPlayer.Companion.createPlayer(vibrator,
+                java.util.concurrent.Executors.newSingleThreadExecutor(),
+                null /* useHapticFeedbackForToken */);
     }
 
     /** Perform MSDL feedback for a token with interaction properties */