diff --git a/quickstep/src/com/android/quickstep/RecentsActivity.java b/quickstep/src/com/android/quickstep/RecentsActivity.java
index 0185ab91d1..3c47eecdc1 100644
--- a/quickstep/src/com/android/quickstep/RecentsActivity.java
+++ b/quickstep/src/com/android/quickstep/RecentsActivity.java
@@ -225,6 +225,14 @@ public class RecentsActivity extends BaseDraggingActivity {
         mFallbackRecentsView.resetTaskVisuals();
     }
 
+    @Override
+    protected void onStop() {
+        super.onStop();
+
+        // Workaround for b/78520668, explicitly trim memory once UI is hidden
+        UiFactory.onTrimMemory(this, TRIM_MEMORY_UI_HIDDEN);
+    }
+
     @Override
     public void onTrimMemory(int level) {
         super.onTrimMemory(level);
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 9ed9fce97f..e3435f43b0 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -737,6 +737,8 @@ public class Launcher extends BaseDraggingActivity
         NotificationListener.removeNotificationsChangedListener();
         getStateManager().moveToRestState();
 
+        // Workaround for b/78520668, explicitly trim memory once UI is hidden
+        UiFactory.onTrimMemory(this, TRIM_MEMORY_UI_HIDDEN);
     }
 
     @Override