diff --git a/CleanSpec.mk b/CleanSpec.mk
index f7bda94..489abd1 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -52,6 +52,7 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/Launcher2.apk)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/Launcher2_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/Launcher2.apk)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/priv-app/Launcher3QuickStep)
 
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/product/priv-app/Launcher3)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/product/priv-app/Launcher3Go)
diff --git a/iconloaderlib/src/com/android/launcher3/icons/cache/IconCacheUpdateHandler.java b/iconloaderlib/src/com/android/launcher3/icons/cache/IconCacheUpdateHandler.java
index bcdbce5..d0db157 100644
--- a/iconloaderlib/src/com/android/launcher3/icons/cache/IconCacheUpdateHandler.java
+++ b/iconloaderlib/src/com/android/launcher3/icons/cache/IconCacheUpdateHandler.java
@@ -171,8 +171,7 @@
                 long updateTime = c.getLong(indexLastUpdate);
                 int version = c.getInt(indexVersion);
                 T app = componentMap.remove(component);
-                if (version == info.versionCode
-                        && updateTime == cachingLogic.getLastUpdatedTime(app, info)
+                if (version == info.versionCode && updateTime == info.lastUpdateTime
                         && TextUtils.equals(c.getString(systemStateIndex),
                                 mIconCache.getIconSystemState(info.packageName))) {
 
diff --git a/protos/launcher_trace.proto b/protos/launcher_trace.proto
new file mode 100644
index 0000000..c6f3543
--- /dev/null
+++ b/protos/launcher_trace.proto
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+
+package com.android.launcher3.tracing;
+
+option java_multiple_files = true;
+
+message LauncherTraceProto {
+
+    optional TouchInteractionServiceProto touch_interaction_service = 1;
+}
+
+message TouchInteractionServiceProto {
+
+    optional bool service_connected = 1;
+}
diff --git a/protos/launcher_trace_file.proto b/protos/launcher_trace_file.proto
new file mode 100644
index 0000000..6ce182a
--- /dev/null
+++ b/protos/launcher_trace_file.proto
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+
+import "launcher_trace.proto";
+
+package com.android.launcher3.tracing;
+
+option java_multiple_files = true;
+
+/* represents a file full of launcher trace entries.
+   Encoded, it should start with 0x9 0x4C 0x4E 0x43 0x48 0x52 0x54 0x52 0x43 (.LNCHRTRC), such
+   that they can be easily identified. */
+message LauncherTraceFileProto {
+
+    /* constant; MAGIC_NUMBER = (long) MAGIC_NUMBER_H << 32 | MagicNumber.MAGIC_NUMBER_L
+       (this is needed because enums have to be 32 bits and there's no nice way to put 64bit
+        constants into .proto files. */
+    enum MagicNumber {
+        INVALID = 0;
+        MAGIC_NUMBER_L = 0x48434E4C;  /* LNCH (little-endian ASCII) */
+        MAGIC_NUMBER_H = 0x43525452;  /* RTRC (little-endian ASCII) */
+    }
+
+    optional fixed64 magic_number = 1;  /* Must be the first field, set to value in MagicNumber */
+    repeated LauncherTraceEntryProto entry = 2;
+}
+
+/* one launcher trace entry. */
+message LauncherTraceEntryProto {
+    /* required: elapsed realtime in nanos since boot of when this entry was logged */
+    optional fixed64 elapsed_realtime_nanos = 1;
+
+    optional LauncherTraceProto launcher = 3;
+}
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index b87fcf2..f6bc5ea 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -51,6 +51,7 @@
 import com.android.launcher3.util.TouchController;
 import com.android.launcher3.util.UiThreadHelper;
 import com.android.launcher3.util.UiThreadHelper.AsyncCommand;
+import com.android.quickstep.RecentsModel;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.SysUINavigationMode.Mode;
 import com.android.quickstep.SystemUiProxy;
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
index edaef30..6af6da3 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
@@ -28,6 +28,7 @@
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
 import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_INPUT_MONITOR;
 import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SYSUI_PROXY;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_TRACING_ENABLED;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.ACTIVITY_TYPE_ASSISTANT;
 
 import android.annotation.TargetApi;
@@ -63,6 +64,8 @@
 import com.android.launcher3.provider.RestoreDbTask;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.TestProtocol;
+import com.android.launcher3.tracing.nano.LauncherTraceProto;
+import com.android.launcher3.tracing.nano.TouchInteractionServiceProto;
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.TraceHelper;
 import com.android.quickstep.inputconsumers.AccessibilityInputConsumer;
@@ -76,6 +79,7 @@
 import com.android.quickstep.inputconsumers.ScreenPinnedInputConsumer;
 import com.android.quickstep.util.ActiveGestureLog;
 import com.android.quickstep.util.AssistantUtilities;
+import com.android.quickstep.util.ProtoTracer;
 import com.android.systemui.plugins.OverscrollPlugin;
 import com.android.systemui.plugins.PluginListener;
 import com.android.systemui.shared.recents.IOverviewProxy;
@@ -85,6 +89,7 @@
 import com.android.systemui.shared.system.InputConsumerController;
 import com.android.systemui.shared.system.InputMonitorCompat;
 import com.android.systemui.shared.system.RecentsAnimationListener;
+import com.android.systemui.shared.tracing.ProtoTraceable;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -113,7 +118,8 @@
  * Service connected by system-UI for handling touch interaction.
  */
 @TargetApi(Build.VERSION_CODES.Q)
-public class TouchInteractionService extends Service implements PluginListener<OverscrollPlugin> {
+public class TouchInteractionService extends Service implements PluginListener<OverscrollPlugin>,
+        ProtoTraceable<LauncherTraceProto> {
 
     private static final String TAG = "TouchInteractionService";
 
@@ -278,6 +284,7 @@
         mDeviceState = new RecentsAnimationDeviceState(this);
         mDeviceState.addNavigationModeChangedCallback(this::onNavigationModeChanged);
         mDeviceState.runOnUserUnlocked(this::onUserUnlocked);
+        ProtoTracer.INSTANCE.get(this).add(this);
 
         sConnected = true;
     }
@@ -384,6 +391,13 @@
             SystemUiProxy.INSTANCE.get(this).setLastSystemUiStateFlags(
                     mDeviceState.getSystemUiStateFlags());
             mOverviewComponentObserver.onSystemUiStateChanged();
+
+            // Update the tracing state
+            if ((mDeviceState.getSystemUiStateFlags() & SYSUI_STATE_TRACING_ENABLED) != 0) {
+                ProtoTracer.INSTANCE.get(TouchInteractionService.this).start();
+            } else {
+                ProtoTracer.INSTANCE.get(TouchInteractionService.this).stop();
+            }
         }
     }
 
@@ -409,6 +423,8 @@
         disposeEventHandlers();
         mDeviceState.destroy();
         SystemUiProxy.INSTANCE.get(this).setProxy(null);
+        ProtoTracer.INSTANCE.get(TouchInteractionService.this).stop();
+        ProtoTracer.INSTANCE.get(this).remove(this);
 
         sConnected = false;
         super.onDestroy();
@@ -730,6 +746,9 @@
             pw.println("  ENABLE_HINTS_IN_OVERVIEW=" + ENABLE_HINTS_IN_OVERVIEW.get());
             pw.println("  FAKE_LANDSCAPE_UI=" + FAKE_LANDSCAPE_UI.get());
             ActiveGestureLog.INSTANCE.dump("", pw);
+            pw.println("ProtoTrace:");
+            pw.println("  file="
+                    + ProtoTracer.INSTANCE.get(TouchInteractionService.this).getTraceFile());
         }
     }
 
@@ -788,4 +807,13 @@
     public void onPluginDisconnected(OverscrollPlugin overscrollPlugin) {
         mOverscrollPlugin = null;
     }
+
+    @Override
+    public void writeToProto(LauncherTraceProto proto) {
+        if (proto.touchInteractionService == null) {
+            proto.touchInteractionService = new TouchInteractionServiceProto();
+        }
+        proto.touchInteractionService.serviceConnected = true;
+        proto.touchInteractionService.serviceConnected = true;
+    }
 }
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java
index 32a67ca..710ce26 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java
@@ -119,4 +119,5 @@
             mActivity.dispatchKeyEvent(ev);
         }
     }
-}
\ No newline at end of file
+}
+
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ProtoTracer.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ProtoTracer.java
new file mode 100644
index 0000000..190763a
--- /dev/null
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ProtoTracer.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.quickstep.util;
+
+import static com.android.launcher3.tracing.nano.LauncherTraceFileProto.MagicNumber.MAGIC_NUMBER_H;
+import static com.android.launcher3.tracing.nano.LauncherTraceFileProto.MagicNumber.MAGIC_NUMBER_L;
+
+import android.content.Context;
+import android.os.SystemClock;
+
+import com.android.launcher3.tracing.nano.LauncherTraceProto;
+import com.android.launcher3.tracing.nano.LauncherTraceEntryProto;
+import com.android.launcher3.tracing.nano.LauncherTraceFileProto;
+import com.android.launcher3.util.MainThreadInitializedObject;
+import com.android.systemui.shared.tracing.FrameProtoTracer;
+import com.android.systemui.shared.tracing.FrameProtoTracer.ProtoTraceParams;
+import com.android.systemui.shared.tracing.ProtoTraceable;
+import com.google.protobuf.nano.MessageNano;
+
+import java.io.File;
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Queue;
+
+
+/**
+ * Controller for coordinating winscope proto tracing.
+ */
+public class ProtoTracer implements ProtoTraceParams<MessageNano,
+        LauncherTraceFileProto, LauncherTraceEntryProto, LauncherTraceProto> {
+
+    public static final MainThreadInitializedObject<ProtoTracer> INSTANCE =
+            new MainThreadInitializedObject<>(ProtoTracer::new);
+
+    private static final String TAG = "ProtoTracer";
+    private static final long MAGIC_NUMBER_VALUE = ((long) MAGIC_NUMBER_H << 32) | MAGIC_NUMBER_L;
+
+    private final Context mContext;
+    private final FrameProtoTracer<MessageNano,
+            LauncherTraceFileProto, LauncherTraceEntryProto, LauncherTraceProto> mProtoTracer;
+
+    public ProtoTracer(Context context) {
+        mContext = context;
+        mProtoTracer = new FrameProtoTracer<>(this);
+    }
+
+    @Override
+    public File getTraceFile() {
+        return new File(mContext.getFilesDir(), "launcher_trace.pb");
+    }
+
+    @Override
+    public LauncherTraceFileProto getEncapsulatingTraceProto() {
+        return new LauncherTraceFileProto();
+    }
+
+    @Override
+    public LauncherTraceEntryProto updateBufferProto(LauncherTraceEntryProto reuseObj,
+            ArrayList<ProtoTraceable<LauncherTraceProto>> traceables) {
+        LauncherTraceEntryProto proto = reuseObj != null
+                ? reuseObj
+                : new LauncherTraceEntryProto();
+        proto.elapsedRealtimeNanos = SystemClock.elapsedRealtimeNanos();
+        proto.launcher = proto.launcher != null ? proto.launcher : new LauncherTraceProto();
+        for (ProtoTraceable t : traceables) {
+            t.writeToProto(proto.launcher);
+        }
+        return proto;
+    }
+
+    @Override
+    public byte[] serializeEncapsulatingProto(LauncherTraceFileProto encapsulatingProto,
+            Queue<LauncherTraceEntryProto> buffer) {
+        encapsulatingProto.magicNumber = MAGIC_NUMBER_VALUE;
+        encapsulatingProto.entry = buffer.toArray(new LauncherTraceEntryProto[0]);
+        return MessageNano.toByteArray(encapsulatingProto);
+    }
+
+    @Override
+    public byte[] getProtoBytes(MessageNano proto) {
+        return MessageNano.toByteArray(proto);
+    }
+
+    @Override
+    public int getProtoSize(MessageNano proto) {
+        return proto.getCachedSize();
+    }
+
+    public void start() {
+        mProtoTracer.start();
+    }
+
+    public void stop() {
+        mProtoTracer.stop();
+    }
+
+    public void add(ProtoTraceable<LauncherTraceProto> traceable) {
+        mProtoTracer.add(traceable);
+    }
+
+    public void remove(ProtoTraceable<LauncherTraceProto> traceable) {
+        mProtoTracer.remove(traceable);
+    }
+
+    public void scheduleFrameUpdate() {
+        mProtoTracer.scheduleFrameUpdate();
+    }
+
+    public void update() {
+        mProtoTracer.update();
+    }
+}
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
index c1ea533..cc10ca9 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
@@ -17,7 +17,6 @@
 package com.android.quickstep.views;
 
 import static androidx.dynamicanimation.animation.DynamicAnimation.MIN_VISIBLE_CHANGE_PIXELS;
-
 import static com.android.launcher3.BaseActivity.STATE_HANDLER_INVISIBILITY_FLAGS;
 import static com.android.launcher3.InvariantDeviceProfile.CHANGE_FLAG_ICON_PARAMS;
 import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
diff --git a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
index ee53386..8eb639b 100644
--- a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
@@ -49,6 +49,7 @@
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.util.RemoteFadeOutAnimationListener;
 import com.android.quickstep.util.ShelfPeekAnim;
+import com.android.systemui.shared.system.ActivityManagerWrapper;
 
 import java.util.stream.Stream;
 
@@ -144,6 +145,12 @@
     }
 
     @Override
+    protected void onUiChangedWhileSleeping() {
+        // Remove the snapshot because the content view may have obvious changes.
+        ActivityManagerWrapper.getInstance().invalidateHomeTaskSnapshot(this);
+    }
+
+    @Override
     public void startIntentSenderForResult(IntentSender intent, int requestCode,
             Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options) {
         if (requestCode != -1) {
diff --git a/quickstep/src/com/android/launcher3/LauncherAnimationRunner.java b/quickstep/src/com/android/launcher3/LauncherAnimationRunner.java
index 31c1acf..874adb2 100644
--- a/quickstep/src/com/android/launcher3/LauncherAnimationRunner.java
+++ b/quickstep/src/com/android/launcher3/LauncherAnimationRunner.java
@@ -150,4 +150,4 @@
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/quickstep/src/com/android/launcher3/uioverrides/DejankBinderTracker.java b/quickstep/src/com/android/launcher3/uioverrides/DejankBinderTracker.java
new file mode 100644
index 0000000..d8aa235
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/uioverrides/DejankBinderTracker.java
@@ -0,0 +1,159 @@
+/**
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.uioverrides;
+
+import static android.os.IBinder.FLAG_ONEWAY;
+
+import android.os.Binder;
+import android.os.Build;
+import android.os.IBinder;
+import android.os.Looper;
+import android.os.RemoteException;
+import android.util.Log;
+
+import androidx.annotation.MainThread;
+
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.function.BiConsumer;
+import java.util.function.Supplier;
+
+/**
+ * A binder proxy transaction listener for tracking non-whitelisted binder calls.
+ */
+public class DejankBinderTracker implements Binder.ProxyTransactListener {
+    private static final String TAG = "DejankBinderTracker";
+
+    private static final Object sLock = new Object();
+    private static final HashSet<String> sWhitelistedFrameworkClasses = new HashSet<>();
+    static {
+        // Common IPCs that are ok to block the main thread.
+        sWhitelistedFrameworkClasses.add("android.view.IWindowSession");
+        sWhitelistedFrameworkClasses.add("android.os.IPowerManager");
+    }
+    private static boolean sTemporarilyIgnoreTracking = false;
+
+    // Used by the client to limit binder tracking to specific regions
+    private static boolean sTrackingAllowed = false;
+
+    private BiConsumer<String, Integer> mUnexpectedTransactionCallback;
+    private boolean mIsTracking = false;
+
+    /**
+     * Temporarily ignore blocking binder calls for the duration of this {@link Runnable}.
+     */
+    @MainThread
+    public static void whitelistIpcs(Runnable runnable) {
+        sTemporarilyIgnoreTracking = true;
+        runnable.run();
+        sTemporarilyIgnoreTracking = false;
+    }
+
+    /**
+     * Temporarily ignore blocking binder calls for the duration of this {@link Supplier}.
+     */
+    @MainThread
+    public static <T> T whitelistIpcs(Supplier<T> supplier) {
+        sTemporarilyIgnoreTracking = true;
+        T value = supplier.get();
+        sTemporarilyIgnoreTracking = false;
+        return value;
+    }
+
+    /**
+     * Enables binder tracking during a test.
+     */
+    @MainThread
+    public static void allowBinderTrackingInTests() {
+        sTrackingAllowed = true;
+    }
+
+    /**
+     * Disables binder tracking during a test.
+     */
+    @MainThread
+    public static void disallowBinderTrackingInTests() {
+        sTrackingAllowed = false;
+    }
+
+    public DejankBinderTracker(BiConsumer<String, Integer> unexpectedTransactionCallback) {
+        mUnexpectedTransactionCallback = unexpectedTransactionCallback;
+    }
+
+    @MainThread
+    public void startTracking() {
+        if (!Build.TYPE.toLowerCase(Locale.ROOT).contains("debug")
+                && !Build.TYPE.toLowerCase(Locale.ROOT).equals("eng")) {
+            Log.wtf(TAG, "Unexpected use of binder tracker in non-debug build", new Exception());
+            return;
+        }
+        if (mIsTracking) {
+            return;
+        }
+        mIsTracking = true;
+        Binder.setProxyTransactListener(this);
+    }
+
+    @MainThread
+    public void stopTracking() {
+        if (!mIsTracking) {
+            return;
+        }
+        mIsTracking = false;
+        Binder.setProxyTransactListener(null);
+    }
+
+    // Override the hidden Binder#onTransactStarted method
+    public synchronized Object onTransactStarted(IBinder binder, int transactionCode, int flags) {
+        if (!mIsTracking
+                || !sTrackingAllowed
+                || sTemporarilyIgnoreTracking
+                || (flags & FLAG_ONEWAY) == FLAG_ONEWAY
+                || !isMainThread()) {
+            return null;
+        }
+
+        String descriptor;
+        try {
+            descriptor = binder.getInterfaceDescriptor();
+            if (sWhitelistedFrameworkClasses.contains(descriptor)) {
+                return null;
+            }
+        } catch (RemoteException e) {
+            e.printStackTrace();
+            descriptor = binder.getClass().getSimpleName();
+        }
+
+        mUnexpectedTransactionCallback.accept(descriptor, transactionCode);
+        return null;
+    }
+
+    @Override
+    public Object onTransactStarted(IBinder binder, int transactionCode) {
+        // Do nothing
+        return null;
+    }
+
+    @Override
+    public void onTransactEnded(Object session) {
+        // Do nothing
+    }
+
+    public static boolean isMainThread() {
+        return Thread.currentThread() == Looper.getMainLooper().getThread();
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index 3c6537a..0f60e44 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -269,6 +269,12 @@
         }
     }
 
+    @Override
+    public void handleImageAsScreenshot(
+            Bitmap screenImage, Rect locationInScreen, Insets visibleInsets, int taskId) {
+
+    }
+
     /**
      * See SharedApiCompat#setShelfHeight()
      */
diff --git a/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java b/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java
index 3d048a6..731a220 100644
--- a/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java
+++ b/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java
@@ -100,4 +100,4 @@
             mLauncher.getBackground().switchToOverview();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 43540ce..80f8ae2 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -922,6 +922,9 @@
 
     @Override
     protected void onStop() {
+        final boolean wasActive = isUserActive();
+        final LauncherState origState = getStateManager().getState();
+        final int origDragLayerChildCount = mDragLayer.getChildCount();
         super.onStop();
 
         if (mDeferOverlayCallbacks) {
@@ -939,6 +942,20 @@
 
         // Workaround for b/78520668, explicitly trim memory once UI is hidden
         onTrimMemory(TRIM_MEMORY_UI_HIDDEN);
+
+        if (wasActive) {
+            // The expected condition is that this activity is stopped because the device goes to
+            // sleep and the UI may have noticeable changes.
+            mDragLayer.post(() -> {
+                if ((!getStateManager().isInStableState(origState)
+                        // The drag layer may be animating (e.g. dismissing QSB).
+                        || mDragLayer.getAlpha() < 1
+                        // Maybe an ArrowPopup is closed.
+                        || mDragLayer.getChildCount() != origDragLayerChildCount)) {
+                    onUiChangedWhileSleeping();
+                }
+            });
+        }
     }
 
     @Override
@@ -1338,12 +1355,17 @@
             // Reset AllApps to its initial state only if we are not in the middle of
             // processing a multi-step drop
             if (mPendingRequestArgs == null) {
+                if (!isInState(NORMAL)) {
+                    onUiChangedWhileSleeping();
+                }
                 mStateManager.goToState(NORMAL);
             }
         }
     };
 
-    private void updateNotificationDots(Predicate<PackageUserKey> updatedDots) {
+    protected void onUiChangedWhileSleeping() { }
+
+    public void updateNotificationDots(Predicate<PackageUserKey> updatedDots) {
         mWorkspace.updateNotificationDots(updatedDots);
         mAppsView.getAppsStore().updateNotificationDots(updatedDots);
     }
diff --git a/src/com/android/launcher3/LauncherStateManager.java b/src/com/android/launcher3/LauncherStateManager.java
index 195e69b..9f25729 100644
--- a/src/com/android/launcher3/LauncherStateManager.java
+++ b/src/com/android/launcher3/LauncherStateManager.java
@@ -164,6 +164,15 @@
     }
 
     /**
+     * @return {@code true} if the state matches the current state and there is no active
+     *         transition to different state.
+     */
+    public boolean isInStableState(LauncherState state) {
+        return mState == state && mCurrentStableState == state
+                && (mConfig.mTargetState == null || mConfig.mTargetState == state);
+    }
+
+    /**
      * @see #goToState(LauncherState, boolean, Runnable)
      */
     public void goToState(LauncherState state) {
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 4089897..7c49f50 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -1325,4 +1325,4 @@
                 + "\nExpected:" + formatEventList(mExpectedEvents, position)
                 + "\nActual:" + formatEventList(actual, position);
     }
-}
\ No newline at end of file
+}