diff --git a/services/core/java/com/android/server/wm/Task.java b/services/core/java/com/android/server/wm/Task.java
index eca7d2e19288a..83fa686bc34b4 100644
--- a/services/core/java/com/android/server/wm/Task.java
+++ b/services/core/java/com/android/server/wm/Task.java
@@ -129,11 +129,11 @@ import android.util.DisplayMetrics;
 import android.util.Slog;
 import android.util.proto.ProtoOutputStream;
 import android.view.DisplayInfo;
-import android.window.ITaskOrganizer;
 import android.view.RemoteAnimationAdapter;
 import android.view.RemoteAnimationTarget;
 import android.view.Surface;
 import android.view.SurfaceControl;
+import android.window.ITaskOrganizer;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.app.IVoiceInteractor;
@@ -594,6 +594,14 @@ class Task extends WindowContainer<WindowContainer> {
         voiceInteractor = _voiceInteractor;
         setIntent(activity, intent, info);
         setMinDimensions(info);
+        // Before we began to reuse a root task (old ActivityStack) as the leaf task, we used to
+        // create a leaf task in this case. Therefore now we won't send out the task created
+        // notification when we decide to reuse it here, so we send out the notification below.
+        // The reason why the created notification sent out when root task is created doesn't work
+        // is that realActivity isn't set until setIntent() method above is called for the first
+        // time. Eventually this notification will be removed when we can populate those information
+        // when root task is created.
+        mAtmService.getTaskChangeNotificationController().notifyTaskCreated(mTaskId, realActivity);
         return this;
     }