diff --git a/core/java/android/window/TransitionInfo.java b/core/java/android/window/TransitionInfo.java
index 0b43eb5419f7b..b8bd7032f6781 100644
--- a/core/java/android/window/TransitionInfo.java
+++ b/core/java/android/window/TransitionInfo.java
@@ -144,8 +144,11 @@ public final class TransitionInfo implements Parcelable {
     /** The window should have no animation (by policy). */
     public static final int FLAG_NO_ANIMATION = 1 << 18;
 
+    /** The task is launching behind home. */
+    public static final int FLAG_TASK_LAUNCHING_BEHIND = 1 << 19;
+
     /** The first unused bit. This can be used by remotes to attach custom flags to this change. */
-    public static final int FLAG_FIRST_CUSTOM = 1 << 19;
+    public static final int FLAG_FIRST_CUSTOM = 1 << 20;
 
     /** The change belongs to a window that won't contain activities. */
     public static final int FLAGS_IS_NON_APP_WINDOW =
@@ -173,6 +176,7 @@ public final class TransitionInfo implements Parcelable {
             FLAG_IS_SYSTEM_WINDOW,
             FLAG_BACK_GESTURE_ANIMATED,
             FLAG_NO_ANIMATION,
+            FLAG_TASK_LAUNCHING_BEHIND,
             FLAG_FIRST_CUSTOM
     })
     public @interface ChangeFlags {}
@@ -395,6 +399,9 @@ public final class TransitionInfo implements Parcelable {
         if ((flags & FLAG_NO_ANIMATION) != 0) {
             sb.append(sb.length() == 0 ? "" : "|").append("NO_ANIMATION");
         }
+        if ((flags & FLAG_TASK_LAUNCHING_BEHIND) != 0) {
+            sb.append((sb.length() == 0 ? "" : "|") + "TASK_LAUNCHING_BEHIND");
+        }
         if ((flags & FLAG_FIRST_CUSTOM) != 0) {
             sb.append(sb.length() == 0 ? "" : "|").append("FIRST_CUSTOM");
         }
diff --git a/services/core/java/com/android/server/wm/Transition.java b/services/core/java/com/android/server/wm/Transition.java
index bf6983b90fbb1..f2e4937aabbf7 100644
--- a/services/core/java/com/android/server/wm/Transition.java
+++ b/services/core/java/com/android/server/wm/Transition.java
@@ -53,6 +53,7 @@ import static android.window.TransitionInfo.FLAG_IS_WALLPAPER;
 import static android.window.TransitionInfo.FLAG_NO_ANIMATION;
 import static android.window.TransitionInfo.FLAG_OCCLUDES_KEYGUARD;
 import static android.window.TransitionInfo.FLAG_SHOW_WALLPAPER;
+import static android.window.TransitionInfo.FLAG_TASK_LAUNCHING_BEHIND;
 import static android.window.TransitionInfo.FLAG_TRANSLUCENT;
 import static android.window.TransitionInfo.FLAG_WILL_IME_SHOWN;
 
@@ -2272,6 +2273,10 @@ class Transition implements BLASTSyncEngine.TransactionReadyListener {
                             .isMonitorTransitionTarget(topActivity)) {
                         flags |= TransitionInfo.FLAG_BACK_GESTURE_ANIMATED;
                     }
+                    if (topActivity != null && topActivity.mLaunchTaskBehind) {
+                        Slog.e(TAG, "Unexpected launch-task-behind operation in shell transition");
+                        flags |= FLAG_TASK_LAUNCHING_BEHIND;
+                    }
                 } else {
                     if (task.mAtmService.mBackNavigationController
                             .isMonitorTransitionTarget(task)) {