diff --git a/data/etc/services.core.protolog.json b/data/etc/services.core.protolog.json
index 5ded2cc..0d62d20 100644
--- a/data/etc/services.core.protolog.json
+++ b/data/etc/services.core.protolog.json
@@ -2497,12 +2497,6 @@
       "group": "WM_ERROR",
       "at": "com\/android\/server\/wm\/WindowManagerService.java"
     },
-    "323235828": {
-      "message": "Delaying app transition for recents animation to finish",
-      "level": "VERBOSE",
-      "group": "WM_DEBUG_APP_TRANSITIONS",
-      "at": "com\/android\/server\/wm\/AppTransitionController.java"
-    },
     "327461496": {
       "message": "Complete pause: %s",
       "level": "VERBOSE",
diff --git a/services/core/java/com/android/server/wm/AppTransitionController.java b/services/core/java/com/android/server/wm/AppTransitionController.java
index 05321df..5640a30 100644
--- a/services/core/java/com/android/server/wm/AppTransitionController.java
+++ b/services/core/java/com/android/server/wm/AppTransitionController.java
@@ -71,7 +71,6 @@
 import static com.android.server.wm.NonAppWindowAnimationAdapter.shouldAttachNavBarToApp;
 import static com.android.server.wm.NonAppWindowAnimationAdapter.shouldStartNonAppWindowAnimationsForKeyguardExit;
 import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_APP_TRANSITION;
-import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_RECENTS;
 import static com.android.server.wm.WallpaperAnimationAdapter.shouldStartWallpaperAnimation;
 import static com.android.server.wm.WindowContainer.AnimationFlags.PARENTS;
 import static com.android.server.wm.WindowManagerDebugConfig.SHOW_LIGHT_TRANSACTIONS;
@@ -1153,17 +1152,13 @@
             if (activity == null) {
                 continue;
             }
-            if (activity.isAnimating(PARENTS, ANIMATION_TYPE_RECENTS)) {
-                ProtoLog.v(WM_DEBUG_APP_TRANSITIONS,
-                        "Delaying app transition for recents animation to finish");
-                return false;
-            }
             ProtoLog.v(WM_DEBUG_APP_TRANSITIONS,
                     "Check opening app=%s: allDrawn=%b startingDisplayed=%b "
                             + "startingMoved=%b isRelaunching()=%b startingWindow=%s",
                     activity, activity.allDrawn, activity.startingDisplayed,
                     activity.startingMoved, activity.isRelaunching(),
                     activity.mStartingWindow);
+
             final boolean allDrawn = activity.allDrawn && !activity.isRelaunching();
             if (!allDrawn && !activity.startingDisplayed && !activity.startingMoved) {
                 return false;
diff --git a/services/core/java/com/android/server/wm/WindowContainer.java b/services/core/java/com/android/server/wm/WindowContainer.java
index a480c37..2f00bc8 100644
--- a/services/core/java/com/android/server/wm/WindowContainer.java
+++ b/services/core/java/com/android/server/wm/WindowContainer.java
@@ -1584,14 +1584,6 @@
         return true;
     }
 
-    void forAllWindowContainers(Consumer<WindowContainer> callback) {
-        callback.accept(this);
-        final int count = mChildren.size();
-        for (int i = 0; i < count; i++) {
-            mChildren.get(i).forAllWindowContainers(callback);
-        }
-    }
-
     /**
      * For all windows at or below this container call the callback.
      * @param   callback Calls the {@link ToBooleanFunction#apply} method for each window found and
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index b9acd69..42344dc 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -118,7 +118,6 @@
 import static com.android.server.wm.DisplayContent.IME_TARGET_LAYERING;
 import static com.android.server.wm.RootWindowContainer.MATCH_ATTACHED_TASK_OR_RECENT_TASKS;
 import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_ALL;
-import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_APP_TRANSITION;
 import static com.android.server.wm.WindowContainer.AnimationFlags.CHILDREN;
 import static com.android.server.wm.WindowContainer.AnimationFlags.TRANSITION;
 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG;
@@ -3049,22 +3048,13 @@
         }
     }
 
-
     void cleanupRecentsAnimation(@RecentsAnimationController.ReorderMode int reorderMode) {
         if (mRecentsAnimationController != null) {
             final RecentsAnimationController controller = mRecentsAnimationController;
             mRecentsAnimationController = null;
             controller.cleanupAnimation(reorderMode);
-            // TODO(multi-display): currently only default display support recents animation.
-            // Cancel any existing app transition animation running in the legacy transition
-            // framework.
-            final DisplayContent dc = getDefaultDisplayContentLocked();
-            dc.mAppTransition.freeze();
-            dc.forAllWindowContainers((wc) -> {
-                if (wc.isAnimating(TRANSITION, ANIMATION_TYPE_APP_TRANSITION)) {
-                    wc.cancelAnimation();
-                }
-            });
+            // TODO(mult-display): currently only default display support recents animation.
+            getDefaultDisplayContentLocked().mAppTransition.updateBooster();
         }
     }
 
diff --git a/services/tests/wmtests/src/com/android/server/wm/AppTransitionTests.java b/services/tests/wmtests/src/com/android/server/wm/AppTransitionTests.java
index 3592158..eb6395b 100644
--- a/services/tests/wmtests/src/com/android/server/wm/AppTransitionTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/AppTransitionTests.java
@@ -39,10 +39,8 @@
 import static com.android.dx.mockito.inline.extended.ExtendedMockito.anyInt;
 import static com.android.dx.mockito.inline.extended.ExtendedMockito.doNothing;
 import static com.android.dx.mockito.inline.extended.ExtendedMockito.doReturn;
-import static com.android.dx.mockito.inline.extended.ExtendedMockito.eq;
 import static com.android.dx.mockito.inline.extended.ExtendedMockito.spyOn;
 import static com.android.dx.mockito.inline.extended.ExtendedMockito.verify;
-import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_RECENTS;
 import static com.android.server.wm.WindowContainer.POSITION_TOP;
 
 import static org.junit.Assert.assertEquals;
@@ -50,9 +48,7 @@
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.never;
 
 import android.graphics.Rect;
 import android.os.Binder;
@@ -380,7 +376,7 @@
         doReturn(false).when(dc).onDescendantOrientationChanged(any());
         final WindowState exitingAppWindow = createWindow(null /* parent */, TYPE_BASE_APPLICATION,
                 dc, "exiting app");
-        final ActivityRecord exitingActivity = exitingAppWindow.mActivityRecord;
+        final ActivityRecord exitingActivity= exitingAppWindow.mActivityRecord;
         // Wait until everything in animation handler get executed to prevent the exiting window
         // from being removed during WindowSurfacePlacer Traversal.
         waitUntilHandlersIdle();
@@ -409,41 +405,6 @@
     }
 
     @Test
-    public void testDelayWhileRecents() {
-        final DisplayContent dc = createNewDisplay(Display.STATE_ON);
-        doReturn(false).when(dc).onDescendantOrientationChanged(any());
-        final Task task = createTask(dc);
-
-        // Simulate activity1 launches activity2.
-        final ActivityRecord activity1 = createActivityRecord(task);
-        activity1.setVisible(true);
-        activity1.mVisibleRequested = false;
-        activity1.allDrawn = true;
-        final ActivityRecord activity2 = createActivityRecord(task);
-        activity2.setVisible(false);
-        activity2.mVisibleRequested = true;
-        activity2.allDrawn = true;
-
-        dc.mClosingApps.add(activity1);
-        dc.mOpeningApps.add(activity2);
-        dc.prepareAppTransition(TRANSIT_OPEN);
-        assertTrue(dc.mAppTransition.containsTransitRequest(TRANSIT_OPEN));
-
-        // Wait until everything in animation handler get executed to prevent the exiting window
-        // from being removed during WindowSurfacePlacer Traversal.
-        waitUntilHandlersIdle();
-
-        // Start recents
-        doReturn(true).when(task)
-                .isSelfAnimating(anyInt(), eq(ANIMATION_TYPE_RECENTS));
-
-        dc.mAppTransitionController.handleAppTransitionReady();
-
-        verify(activity1, never()).commitVisibility(anyBoolean(), anyBoolean(), anyBoolean());
-        verify(activity2, never()).commitVisibility(anyBoolean(), anyBoolean(), anyBoolean());
-    }
-
-    @Test
     public void testGetAnimationStyleResId() {
         // Verify getAnimationStyleResId will return as LayoutParams.windowAnimations when without
         // specifying window type.