diff --git a/quickstep/src/com/android/quickstep/RecentsActivity.java b/quickstep/src/com/android/quickstep/RecentsActivity.java
index 0185ab9..3c47eec 100644
--- a/quickstep/src/com/android/quickstep/RecentsActivity.java
+++ b/quickstep/src/com/android/quickstep/RecentsActivity.java
@@ -226,6 +226,14 @@
     }
 
     @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);
         UiFactory.onTrimMemory(this, level);
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 0aa760e..1285a2b 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -737,6 +737,8 @@
         NotificationListener.removeNotificationsChangedListener();
         getStateManager().moveToRestState();
 
+        // Workaround for b/78520668, explicitly trim memory once UI is hidden
+        UiFactory.onTrimMemory(this, TRIM_MEMORY_UI_HIDDEN);
     }
 
     @Override