diff --git a/core/java/android/service/wallpaper/WallpaperService.java b/core/java/android/service/wallpaper/WallpaperService.java
index e27af17..d53ad17 100644
--- a/core/java/android/service/wallpaper/WallpaperService.java
+++ b/core/java/android/service/wallpaper/WallpaperService.java
@@ -61,6 +61,7 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.HandlerThread;
 import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
@@ -180,6 +181,9 @@
     private final ArrayList<Engine> mActiveEngines
             = new ArrayList<Engine>();
 
+    private Handler mBackgroundHandler;
+    private HandlerThread mBackgroundThread;
+
     static final class WallpaperCommand {
         String action;
         int x;
@@ -198,14 +202,6 @@
      */
     public class Engine {
         IWallpaperEngineWrapper mIWallpaperEngine;
-        final ArraySet<RectF> mLocalColorAreas = new ArraySet<>(4);
-        final ArraySet<RectF> mLocalColorsToAdd = new ArraySet<>(4);
-
-        // 2D matrix [x][y] to represent a page of a portion of a window
-        EngineWindowPage[] mWindowPages = new EngineWindowPage[0];
-        Bitmap mLastScreenshot;
-        int mLastWindowPage = -1;
-        private boolean mResetWindowPages;
 
         // Copies from mIWallpaperEngine.
         HandlerCaller mCaller;
@@ -267,11 +263,27 @@
 
         final Object mLock = new Object();
         boolean mOffsetMessageEnqueued;
+
         @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
         float mPendingXOffset;
         float mPendingYOffset;
         float mPendingXOffsetStep;
         float mPendingYOffsetStep;
+
+        /**
+         * local color extraction related fields
+         * to be used by the background thread only (except the atomic boolean)
+         */
+        final ArraySet<RectF> mLocalColorAreas = new ArraySet<>(4);
+        final ArraySet<RectF> mLocalColorsToAdd = new ArraySet<>(4);
+        private long mLastProcessLocalColorsTimestamp;
+        private AtomicBoolean mProcessLocalColorsPending = new AtomicBoolean(false);
+        private int mPixelCopyCount = 0;
+        // 2D matrix [x][y] to represent a page of a portion of a window
+        EngineWindowPage[] mWindowPages = new EngineWindowPage[0];
+        Bitmap mLastScreenshot;
+        private boolean mResetWindowPages;
+
         boolean mPendingSync;
         MotionEvent mPendingMove;
         boolean mIsInAmbientMode;
@@ -280,12 +292,8 @@
         private long mLastColorInvalidation;
         private final Runnable mNotifyColorsChanged = this::notifyColorsChanged;
 
-        // used to throttle processLocalColors
-        private long mLastProcessLocalColorsTimestamp;
-        private AtomicBoolean mProcessLocalColorsPending = new AtomicBoolean(false);
         private final Supplier<Long> mClockFunction;
         private final Handler mHandler;
-
         private Display mDisplay;
         private Context mDisplayContext;
         private int mDisplayState;
@@ -825,7 +833,7 @@
                             + "was not established.");
                 }
                 mResetWindowPages = true;
-                processLocalColors(mPendingXOffset, mPendingXOffsetStep);
+                processLocalColors();
             } catch (RemoteException e) {
                 Log.w(TAG, "Can't notify system because wallpaper connection was lost.", e);
             }
@@ -1364,7 +1372,7 @@
                             resetWindowPages();
                             mSession.finishDrawing(mWindow, null /* postDrawTransaction */,
                                                    Integer.MAX_VALUE);
-                            processLocalColors(mPendingXOffset, mPendingXOffsetStep);
+                            processLocalColors();
                         }
                         reposition();
                         reportEngineShown(shouldWaitForEngineShown());
@@ -1509,7 +1517,7 @@
             if (!mDestroyed) {
                 mVisible = visible;
                 reportVisibility();
-                if (mReportedVisible) processLocalColors(mPendingXOffset, mPendingXOffsetStep);
+                if (mReportedVisible) processLocalColors();
             } else {
                 AnimationHandler.requestAnimatorsEnabled(visible, this);
             }
@@ -1593,31 +1601,41 @@
             }
 
             // setup local color extraction data
-            processLocalColors(xOffset, xOffsetStep);
+            processLocalColors();
         }
 
         /**
          * Thread-safe util to call {@link #processLocalColorsInternal} with a minimum interval of
          * {@link #PROCESS_LOCAL_COLORS_INTERVAL_MS} between two calls.
          */
-        private void processLocalColors(float xOffset, float xOffsetStep) {
+        private void processLocalColors() {
             if (mProcessLocalColorsPending.compareAndSet(false, true)) {
                 final long now = mClockFunction.get();
                 final long timeSinceLastColorProcess = now - mLastProcessLocalColorsTimestamp;
                 final long timeToWait = Math.max(0,
                         PROCESS_LOCAL_COLORS_INTERVAL_MS - timeSinceLastColorProcess);
 
-                mHandler.postDelayed(() -> {
+                mBackgroundHandler.postDelayed(() -> {
                     mLastProcessLocalColorsTimestamp = now + timeToWait;
                     mProcessLocalColorsPending.set(false);
-                    processLocalColorsInternal(xOffset, xOffsetStep);
+                    processLocalColorsInternal();
                 }, timeToWait);
             }
         }
 
-        private void processLocalColorsInternal(float xOffset, float xOffsetStep) {
+        private void processLocalColorsInternal() {
             // implemented by the wallpaper
             if (supportsLocalColorExtraction()) return;
+            assertBackgroundThread();
+            float xOffset;
+            float xOffsetStep;
+            float wallpaperDimAmount;
+            synchronized (mLock) {
+                xOffset = mPendingXOffset;
+                xOffsetStep = mPendingXOffsetStep;
+                wallpaperDimAmount = mWallpaperDimAmount;
+            }
+
             if (DEBUG) {
                 Log.d(TAG, "processLocalColors " + xOffset + " of step "
                         + xOffsetStep);
@@ -1680,7 +1698,7 @@
                 xPage = mWindowPages.length - 1;
             }
             current = mWindowPages[xPage];
-            updatePage(current, xPage, xPages, finalXOffsetStep);
+            updatePage(current, xPage, xPages, wallpaperDimAmount);
             Trace.endSection();
         }
 
@@ -1700,16 +1718,23 @@
             }
         }
 
+        /**
+         * Must be called with the surface lock held.
+         * Must not be called if the surface is not valid.
+         * Will unlock the surface when done using it.
+         */
         void updatePage(EngineWindowPage currentPage, int pageIndx, int numPages,
-                float xOffsetStep) {
+                float wallpaperDimAmount) {
+
+            assertBackgroundThread();
+
             // in case the clock is zero, we start with negative time
             long current = SystemClock.elapsedRealtime() - DEFAULT_UPDATE_SCREENSHOT_DURATION;
             long lapsed = current - currentPage.getLastUpdateTime();
             // Always update the page when the last update time is <= 0
             // This is important especially when the device first boots
-            if (lapsed < DEFAULT_UPDATE_SCREENSHOT_DURATION) {
-                return;
-            }
+            if (lapsed < DEFAULT_UPDATE_SCREENSHOT_DURATION) return;
+
             Surface surface = mSurfaceHolder.getSurface();
             if (!surface.isValid()) return;
             boolean widthIsLarger = mSurfaceSize.x > mSurfaceSize.y;
@@ -1725,33 +1750,42 @@
             Bitmap screenShot = Bitmap.createBitmap(width, height,
                     Bitmap.Config.ARGB_8888);
             final Bitmap finalScreenShot = screenShot;
-            Trace.beginSection("WallpaperService#pixelCopy");
-            PixelCopy.request(surface, screenShot, (res) -> {
-                Trace.endSection();
-                if (DEBUG) Log.d(TAG, "result of pixel copy is " + res);
-                if (res != PixelCopy.SUCCESS) {
-                    Bitmap lastBitmap = currentPage.getBitmap();
-                    // assign the last bitmap taken for now
-                    currentPage.setBitmap(mLastScreenshot);
-                    Bitmap lastScreenshot = mLastScreenshot;
-                    if (lastScreenshot != null && !lastScreenshot.isRecycled()
-                            && !Objects.equals(lastBitmap, lastScreenshot)) {
-                        updatePageColors(currentPage, pageIndx, numPages, xOffsetStep);
+            final String pixelCopySectionName = "WallpaperService#pixelCopy";
+            final int pixelCopyCount = mPixelCopyCount++;
+            Trace.beginAsyncSection(pixelCopySectionName, pixelCopyCount);
+            try {
+                PixelCopy.request(surface, screenShot, (res) -> {
+                    Trace.endAsyncSection(pixelCopySectionName, pixelCopyCount);
+                    if (DEBUG) Log.d(TAG, "result of pixel copy is " + res);
+                    if (res != PixelCopy.SUCCESS) {
+                        Bitmap lastBitmap = currentPage.getBitmap();
+                        // assign the last bitmap taken for now
+                        currentPage.setBitmap(mLastScreenshot);
+                        Bitmap lastScreenshot = mLastScreenshot;
+                        if (lastScreenshot != null && !lastScreenshot.isRecycled()
+                                && !Objects.equals(lastBitmap, lastScreenshot)) {
+                            updatePageColors(currentPage, pageIndx, numPages, wallpaperDimAmount);
+                        }
+                    } else {
+                        mLastScreenshot = finalScreenShot;
+                        // going to hold this lock for a while
+                        currentPage.setBitmap(finalScreenShot);
+                        currentPage.setLastUpdateTime(current);
+                        updatePageColors(currentPage, pageIndx, numPages, wallpaperDimAmount);
                     }
-                } else {
-                    mLastScreenshot = finalScreenShot;
-                    // going to hold this lock for a while
-                    currentPage.setBitmap(finalScreenShot);
-                    currentPage.setLastUpdateTime(current);
-                    updatePageColors(currentPage, pageIndx, numPages, xOffsetStep);
-                }
-            }, mHandler);
-
+                }, mBackgroundHandler);
+            } catch (IllegalArgumentException e) {
+                // this can potentially happen if the surface is invalidated right between the
+                // surface.isValid() check and the PixelCopy operation.
+                // in this case, stop: we'll compute colors on the next processLocalColors call.
+                Log.i(TAG, "Cancelling processLocalColors: exception caught during PixelCopy");
+            }
         }
         // locked by the passed page
-        private void updatePageColors(EngineWindowPage page, int pageIndx, int numPages,
-                float xOffsetStep) {
+        private void updatePageColors(
+                EngineWindowPage page, int pageIndx, int numPages, float wallpaperDimAmount) {
             if (page.getBitmap() == null) return;
+            assertBackgroundThread();
             Trace.beginSection("WallpaperService#updatePageColors");
             if (DEBUG) {
                 Log.d(TAG, "updatePageColorsLocked for page " + pageIndx + " with areas "
@@ -1773,7 +1807,7 @@
                     Log.e(TAG, "Error creating page local color bitmap", e);
                     continue;
                 }
-                WallpaperColors color = WallpaperColors.fromBitmap(target, mWallpaperDimAmount);
+                WallpaperColors color = WallpaperColors.fromBitmap(target, wallpaperDimAmount);
                 target.recycle();
                 WallpaperColors currentColor = page.getColors(area);
 
@@ -1790,17 +1824,26 @@
                                 + " local color callback for area" + area + " for page " + pageIndx
                                 + " of " + numPages);
                     }
-                    try {
-                        mConnection.onLocalWallpaperColorsChanged(area, color,
-                                mDisplayContext.getDisplayId());
-                    } catch (RemoteException e) {
-                        Log.e(TAG, "Error calling Connection.onLocalWallpaperColorsChanged", e);
-                    }
+                    mHandler.post(() -> {
+                        try {
+                            mConnection.onLocalWallpaperColorsChanged(area, color,
+                                    mDisplayContext.getDisplayId());
+                        } catch (RemoteException e) {
+                            Log.e(TAG, "Error calling Connection.onLocalWallpaperColorsChanged", e);
+                        }
+                    });
                 }
             }
             Trace.endSection();
         }
 
+        private void assertBackgroundThread() {
+            if (!mBackgroundHandler.getLooper().isCurrentThread()) {
+                throw new IllegalStateException(
+                        "ProcessLocalColors should be called from the background thread");
+            }
+        }
+
         private RectF generateSubRect(RectF in, int pageInx, int numPages) {
             float minLeft = (float) (pageInx) / (float) (numPages);
             float maxRight = (float) (pageInx + 1) / (float) (numPages);
@@ -1825,7 +1868,6 @@
             if (supportsLocalColorExtraction()) return;
             if (!mResetWindowPages) return;
             mResetWindowPages = false;
-            mLastWindowPage = -1;
             for (int i = 0; i < mWindowPages.length; i++) {
                 mWindowPages[i].setLastUpdateTime(0L);
             }
@@ -1851,12 +1893,10 @@
             if (DEBUG) {
                 Log.d(TAG, "addLocalColorsAreas adding local color areas " + regions);
             }
-            mHandler.post(() -> {
+            mBackgroundHandler.post(() -> {
                 mLocalColorsToAdd.addAll(regions);
-                processLocalColors(mPendingXOffset, mPendingYOffset);
+                processLocalColors();
             });
-
-
         }
 
         /**
@@ -1866,7 +1906,7 @@
          */
         public void removeLocalColorsAreas(@NonNull List<RectF> regions) {
             if (supportsLocalColorExtraction()) return;
-            mHandler.post(() -> {
+            mBackgroundHandler.post(() -> {
                 float step = mPendingXOffsetStep;
                 mLocalColorsToAdd.removeAll(regions);
                 mLocalColorAreas.removeAll(regions);
@@ -2497,6 +2537,9 @@
     @Override
     public void onCreate() {
         Trace.beginSection("WPMS.onCreate");
+        mBackgroundThread = new HandlerThread("DefaultWallpaperLocalColorExtractor");
+        mBackgroundThread.start();
+        mBackgroundHandler = new Handler(mBackgroundThread.getLooper());
         super.onCreate();
         Trace.endSection();
     }
@@ -2509,6 +2552,7 @@
             mActiveEngines.get(i).detach();
         }
         mActiveEngines.clear();
+        mBackgroundThread.quitSafely();
         Trace.endSection();
     }
 
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellModule.java b/libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellModule.java
index efc7d1f..1239cdc 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellModule.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellModule.java
@@ -558,16 +558,18 @@
     static FullscreenUnfoldTaskAnimator provideFullscreenUnfoldTaskAnimator(
             Context context,
             UnfoldBackgroundController unfoldBackgroundController,
+            ShellController shellController,
             DisplayInsetsController displayInsetsController
     ) {
         return new FullscreenUnfoldTaskAnimator(context, unfoldBackgroundController,
-                displayInsetsController);
+                shellController, displayInsetsController);
     }
 
     @Provides
     static SplitTaskUnfoldAnimator provideSplitTaskUnfoldAnimatorBase(
             Context context,
             UnfoldBackgroundController backgroundController,
+            ShellController shellController,
             @ShellMainThread ShellExecutor executor,
             Lazy<Optional<SplitScreenController>> splitScreenOptional,
             DisplayInsetsController displayInsetsController
@@ -577,7 +579,7 @@
         // controller directly once we refactor ShellTaskOrganizer to not depend on the unfold
         // animation controller directly.
         return new SplitTaskUnfoldAnimator(context, executor, splitScreenOptional,
-                backgroundController, displayInsetsController);
+                shellController, backgroundController, displayInsetsController);
     }
 
     @WMSingleton
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/FullscreenUnfoldTaskAnimator.java b/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/FullscreenUnfoldTaskAnimator.java
index eab82f0..e0f3fcd 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/FullscreenUnfoldTaskAnimator.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/FullscreenUnfoldTaskAnimator.java
@@ -26,8 +26,10 @@
 import android.annotation.NonNull;
 import android.app.TaskInfo;
 import android.content.Context;
+import android.content.res.Configuration;
 import android.graphics.Matrix;
 import android.graphics.Rect;
+import android.os.Trace;
 import android.util.SparseArray;
 import android.view.InsetsSource;
 import android.view.InsetsState;
@@ -36,6 +38,8 @@
 
 import com.android.internal.policy.ScreenDecorationsUtils;
 import com.android.wm.shell.common.DisplayInsetsController;
+import com.android.wm.shell.sysui.ConfigurationChangeListener;
+import com.android.wm.shell.sysui.ShellController;
 import com.android.wm.shell.unfold.UnfoldAnimationController;
 import com.android.wm.shell.unfold.UnfoldBackgroundController;
 
@@ -51,7 +55,7 @@
  * instances of FullscreenUnfoldTaskAnimator.
  */
 public class FullscreenUnfoldTaskAnimator implements UnfoldTaskAnimator,
-        DisplayInsetsController.OnInsetsChangedListener {
+        DisplayInsetsController.OnInsetsChangedListener, ConfigurationChangeListener {
 
     private static final float[] FLOAT_9 = new float[9];
     private static final TypeEvaluator<Rect> RECT_EVALUATOR = new RectEvaluator(new Rect());
@@ -63,17 +67,21 @@
 
     private final SparseArray<AnimationContext> mAnimationContextByTaskId = new SparseArray<>();
     private final int mExpandedTaskBarHeight;
-    private final float mWindowCornerRadiusPx;
     private final DisplayInsetsController mDisplayInsetsController;
     private final UnfoldBackgroundController mBackgroundController;
+    private final Context mContext;
+    private final ShellController mShellController;
 
     private InsetsSource mTaskbarInsetsSource;
+    private float mWindowCornerRadiusPx;
 
     public FullscreenUnfoldTaskAnimator(Context context,
             @NonNull UnfoldBackgroundController backgroundController,
-            DisplayInsetsController displayInsetsController) {
+            ShellController shellController, DisplayInsetsController displayInsetsController) {
+        mContext = context;
         mDisplayInsetsController = displayInsetsController;
         mBackgroundController = backgroundController;
+        mShellController = shellController;
         mExpandedTaskBarHeight = context.getResources().getDimensionPixelSize(
                 com.android.internal.R.dimen.taskbar_frame_height);
         mWindowCornerRadiusPx = ScreenDecorationsUtils.getWindowCornerRadius(context);
@@ -81,6 +89,14 @@
 
     public void init() {
         mDisplayInsetsController.addInsetsChangedListener(DEFAULT_DISPLAY, this);
+        mShellController.addConfigurationChangeListener(this);
+    }
+
+    @Override
+    public void onConfigurationChanged(Configuration newConfiguration) {
+        Trace.beginSection("FullscreenUnfoldTaskAnimator#onConfigurationChanged");
+        mWindowCornerRadiusPx = ScreenDecorationsUtils.getWindowCornerRadius(mContext);
+        Trace.endSection();
     }
 
     @Override
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/SplitTaskUnfoldAnimator.java b/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/SplitTaskUnfoldAnimator.java
index 6e10ebe..addd0a6 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/SplitTaskUnfoldAnimator.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/unfold/animation/SplitTaskUnfoldAnimator.java
@@ -28,8 +28,10 @@
 import android.animation.TypeEvaluator;
 import android.app.TaskInfo;
 import android.content.Context;
+import android.content.res.Configuration;
 import android.graphics.Insets;
 import android.graphics.Rect;
+import android.os.Trace;
 import android.util.SparseArray;
 import android.view.InsetsSource;
 import android.view.InsetsState;
@@ -42,6 +44,8 @@
 import com.android.wm.shell.splitscreen.SplitScreen;
 import com.android.wm.shell.splitscreen.SplitScreen.SplitScreenListener;
 import com.android.wm.shell.splitscreen.SplitScreenController;
+import com.android.wm.shell.sysui.ConfigurationChangeListener;
+import com.android.wm.shell.sysui.ShellController;
 import com.android.wm.shell.unfold.UnfoldAnimationController;
 import com.android.wm.shell.unfold.UnfoldBackgroundController;
 
@@ -62,16 +66,18 @@
  * They use independent instances of SplitTaskUnfoldAnimator.
  */
 public class SplitTaskUnfoldAnimator implements UnfoldTaskAnimator,
-        DisplayInsetsController.OnInsetsChangedListener, SplitScreenListener {
+        DisplayInsetsController.OnInsetsChangedListener, SplitScreenListener,
+        ConfigurationChangeListener {
 
     private static final TypeEvaluator<Rect> RECT_EVALUATOR = new RectEvaluator(new Rect());
     private static final float CROPPING_START_MARGIN_FRACTION = 0.05f;
 
+    private final Context mContext;
     private final Executor mExecutor;
     private final DisplayInsetsController mDisplayInsetsController;
     private final SparseArray<AnimationContext> mAnimationContextByTaskId = new SparseArray<>();
     private final int mExpandedTaskBarHeight;
-    private final float mWindowCornerRadiusPx;
+    private final ShellController mShellController;
     private final Lazy<Optional<SplitScreenController>> mSplitScreenController;
     private final UnfoldBackgroundController mUnfoldBackgroundController;
 
@@ -79,6 +85,7 @@
     private final Rect mSideStageBounds = new Rect();
     private final Rect mRootStageBounds = new Rect();
 
+    private float mWindowCornerRadiusPx;
     private InsetsSource mTaskbarInsetsSource;
 
     @SplitPosition
@@ -88,10 +95,12 @@
 
     public SplitTaskUnfoldAnimator(Context context, Executor executor,
             Lazy<Optional<SplitScreenController>> splitScreenController,
-            UnfoldBackgroundController unfoldBackgroundController,
+            ShellController shellController, UnfoldBackgroundController unfoldBackgroundController,
             DisplayInsetsController displayInsetsController) {
         mDisplayInsetsController = displayInsetsController;
         mExecutor = executor;
+        mContext = context;
+        mShellController = shellController;
         mUnfoldBackgroundController = unfoldBackgroundController;
         mSplitScreenController = splitScreenController;
         mExpandedTaskBarHeight = context.getResources().getDimensionPixelSize(
@@ -103,6 +112,14 @@
     @Override
     public void init() {
         mDisplayInsetsController.addInsetsChangedListener(DEFAULT_DISPLAY, this);
+        mShellController.addConfigurationChangeListener(this);
+    }
+
+    @Override
+    public void onConfigurationChanged(Configuration newConfiguration) {
+        Trace.beginSection("SplitTaskUnfoldAnimator#onConfigurationChanged");
+        mWindowCornerRadiusPx = ScreenDecorationsUtils.getWindowCornerRadius(mContext);
+        Trace.endSection();
     }
 
     /**
diff --git a/packages/SystemUI/src/com/android/systemui/flags/Flags.kt b/packages/SystemUI/src/com/android/systemui/flags/Flags.kt
index 9fe1739..6bc1edd 100644
--- a/packages/SystemUI/src/com/android/systemui/flags/Flags.kt
+++ b/packages/SystemUI/src/com/android/systemui/flags/Flags.kt
@@ -600,7 +600,8 @@
     @JvmField val UDFPS_ELLIPSE_DETECTION = unreleasedFlag(2202, "udfps_ellipse_detection")
 
     // 2300 - stylus
-    @JvmField val TRACK_STYLUS_EVER_USED = releasedFlag(2300, "track_stylus_ever_used")
+    @JvmField
+    val TRACK_STYLUS_EVER_USED = unreleasedFlag(2300, "track_stylus_ever_used", teamfood = true)
     @JvmField val ENABLE_STYLUS_CHARGING_UI = unreleasedFlag(2301, "enable_stylus_charging_ui")
     @JvmField
     val ENABLE_USI_BATTERY_NOTIFICATIONS = unreleasedFlag(2302, "enable_usi_battery_notifications")
diff --git a/packages/SystemUI/src/com/android/systemui/qs/QSFragment.java b/packages/SystemUI/src/com/android/systemui/qs/QSFragment.java
index 8ad102e..ae965d3 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/QSFragment.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/QSFragment.java
@@ -51,9 +51,7 @@
 import com.android.systemui.animation.ShadeInterpolation;
 import com.android.systemui.compose.ComposeFacade;
 import com.android.systemui.dump.DumpManager;
-import com.android.systemui.flags.FeatureFlags;
 import com.android.systemui.media.controls.ui.MediaHost;
-import com.android.systemui.plugins.FalsingManager;
 import com.android.systemui.plugins.qs.QS;
 import com.android.systemui.plugins.qs.QSContainerController;
 import com.android.systemui.plugins.statusbar.StatusBarStateController;
@@ -61,6 +59,7 @@
 import com.android.systemui.qs.dagger.QSFragmentComponent;
 import com.android.systemui.qs.footer.ui.binder.FooterActionsViewBinder;
 import com.android.systemui.qs.footer.ui.viewmodel.FooterActionsViewModel;
+import com.android.systemui.qs.logging.QSLogger;
 import com.android.systemui.statusbar.CommandQueue;
 import com.android.systemui.statusbar.StatusBarState;
 import com.android.systemui.statusbar.SysuiStatusBarStateController;
@@ -88,14 +87,11 @@
 
     private final Rect mQsBounds = new Rect();
     private final SysuiStatusBarStateController mStatusBarStateController;
-    private final FalsingManager mFalsingManager;
     private final KeyguardBypassController mBypassController;
     private boolean mQsExpanded;
     private boolean mHeaderAnimating;
     private boolean mStackScrollerOverscrolling;
 
-    private long mDelay;
-
     private QSAnimator mQSAnimator;
     private HeightListener mPanelView;
     private QSSquishinessController mQSSquishinessController;
@@ -116,8 +112,7 @@
     private final MediaHost mQqsMediaHost;
     private final QSFragmentComponent.Factory mQsComponentFactory;
     private final QSFragmentDisableFlagsLogger mQsFragmentDisableFlagsLogger;
-    private final QSTileHost mHost;
-    private final FeatureFlags mFeatureFlags;
+    private final QSLogger mLogger;
     private final FooterActionsController mFooterActionsController;
     private final FooterActionsViewModel.Factory mFooterActionsViewModelFactory;
     private final ListeningAndVisibilityLifecycleOwner mListeningAndVisibilityLifecycleOwner;
@@ -150,11 +145,6 @@
      */
     private boolean mTransitioningToFullShade;
 
-    /**
-     * Whether the next Quick settings
-     */
-    private boolean mAnimateNextQsUpdate;
-
     private final DumpManager mDumpManager;
 
     /**
@@ -178,14 +168,13 @@
 
     @Inject
     public QSFragment(RemoteInputQuickSettingsDisabler remoteInputQsDisabler,
-            QSTileHost qsTileHost,
             SysuiStatusBarStateController statusBarStateController, CommandQueue commandQueue,
             @Named(QS_PANEL) MediaHost qsMediaHost,
             @Named(QUICK_QS_PANEL) MediaHost qqsMediaHost,
             KeyguardBypassController keyguardBypassController,
             QSFragmentComponent.Factory qsComponentFactory,
             QSFragmentDisableFlagsLogger qsFragmentDisableFlagsLogger,
-            FalsingManager falsingManager, DumpManager dumpManager, FeatureFlags featureFlags,
+            DumpManager dumpManager, QSLogger qsLogger,
             FooterActionsController footerActionsController,
             FooterActionsViewModel.Factory footerActionsViewModelFactory) {
         mRemoteInputQuickSettingsDisabler = remoteInputQsDisabler;
@@ -193,13 +182,11 @@
         mQqsMediaHost = qqsMediaHost;
         mQsComponentFactory = qsComponentFactory;
         mQsFragmentDisableFlagsLogger = qsFragmentDisableFlagsLogger;
+        mLogger = qsLogger;
         commandQueue.observe(getLifecycle(), this);
-        mHost = qsTileHost;
-        mFalsingManager = falsingManager;
         mBypassController = keyguardBypassController;
         mStatusBarStateController = statusBarStateController;
         mDumpManager = dumpManager;
-        mFeatureFlags = featureFlags;
         mFooterActionsController = footerActionsController;
         mFooterActionsViewModelFactory = footerActionsViewModelFactory;
         mListeningAndVisibilityLifecycleOwner = new ListeningAndVisibilityLifecycleOwner();
@@ -716,8 +703,10 @@
     private void setAlphaAnimationProgress(float progress) {
         final View view = getView();
         if (progress == 0 && view.getVisibility() != View.INVISIBLE) {
+            mLogger.logVisibility("QS fragment", View.INVISIBLE);
             view.setVisibility(View.INVISIBLE);
         } else if (progress > 0 && view.getVisibility() != View.VISIBLE) {
+            mLogger.logVisibility("QS fragment", View.VISIBLE);
             view.setVisibility((View.VISIBLE));
         }
         view.setAlpha(interpolateAlphaAnimationProgress(progress));
@@ -914,7 +903,6 @@
             getView().getViewTreeObserver().removeOnPreDrawListener(this);
             getView().animate()
                     .translationY(0f)
-                    .setStartDelay(mDelay)
                     .setDuration(StackStateAnimator.ANIMATION_DURATION_GO_TO_FULL_SHADE)
                     .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                     .setListener(mAnimateHeaderSlidingInListener)
diff --git a/packages/SystemUI/src/com/android/systemui/qs/logging/QSLogger.kt b/packages/SystemUI/src/com/android/systemui/qs/logging/QSLogger.kt
index d32ef32..23c41db 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/logging/QSLogger.kt
+++ b/packages/SystemUI/src/com/android/systemui/qs/logging/QSLogger.kt
@@ -17,15 +17,14 @@
 package com.android.systemui.qs.logging
 
 import android.service.quicksettings.Tile
+import android.view.View
 import com.android.systemui.log.dagger.QSLog
 import com.android.systemui.plugins.log.ConstantStringsLogger
 import com.android.systemui.plugins.log.ConstantStringsLoggerImpl
 import com.android.systemui.plugins.log.LogBuffer
-import com.android.systemui.plugins.log.LogLevel
 import com.android.systemui.plugins.log.LogLevel.DEBUG
 import com.android.systemui.plugins.log.LogLevel.ERROR
 import com.android.systemui.plugins.log.LogLevel.VERBOSE
-import com.android.systemui.plugins.log.LogMessage
 import com.android.systemui.plugins.qs.QSTile
 import com.android.systemui.statusbar.StatusBarState
 import com.google.errorprone.annotations.CompileTimeConstant
@@ -332,4 +331,25 @@
             else -> "wrong state"
         }
     }
+
+    fun logVisibility(viewName: String, @View.Visibility visibility: Int) {
+        buffer.log(
+            TAG,
+            DEBUG,
+            {
+                str1 = viewName
+                str2 = toVisibilityString(visibility)
+            },
+            { "$str1 visibility: $str2" }
+        )
+    }
+
+    private fun toVisibilityString(visibility: Int): String {
+        return when (visibility) {
+            View.VISIBLE -> "VISIBLE"
+            View.INVISIBLE -> "INVISIBLE"
+            View.GONE -> "GONE"
+            else -> "undefined"
+        }
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/shade/QuickSettingsController.java b/packages/SystemUI/src/com/android/systemui/shade/QuickSettingsController.java
index c0ef4c1..d041212 100644
--- a/packages/SystemUI/src/com/android/systemui/shade/QuickSettingsController.java
+++ b/packages/SystemUI/src/com/android/systemui/shade/QuickSettingsController.java
@@ -835,6 +835,7 @@
     @VisibleForTesting
     void setExpandImmediate(boolean expandImmediate) {
         if (expandImmediate != mExpandImmediate) {
+            mShadeLog.logQsExpandImmediateChanged(expandImmediate);
             mExpandImmediate = expandImmediate;
             mShadeExpansionStateManager.notifyExpandImmediateChange(expandImmediate);
         }
@@ -1377,6 +1378,9 @@
     }
 
     private void collapseOrExpandQs() {
+        if (mSplitShadeEnabled) {
+            return; // QS is always expanded in split shade
+        }
         onExpansionStarted();
         if (getExpanded()) {
             flingQs(0, FLING_COLLAPSE, null, true);
diff --git a/packages/SystemUI/src/com/android/systemui/shade/ShadeLogger.kt b/packages/SystemUI/src/com/android/systemui/shade/ShadeLogger.kt
index b28509e..aa8c5b6 100644
--- a/packages/SystemUI/src/com/android/systemui/shade/ShadeLogger.kt
+++ b/packages/SystemUI/src/com/android/systemui/shade/ShadeLogger.kt
@@ -150,6 +150,17 @@
         )
     }
 
+    fun logQsExpandImmediateChanged(newValue: Boolean) {
+        buffer.log(
+            TAG,
+            LogLevel.VERBOSE,
+            {
+                bool1 = newValue
+            },
+            { "qsExpandImmediate=$bool1" }
+        )
+    }
+
     fun logQsExpansionChanged(
             message: String,
             qsExpanded: Boolean,
diff --git a/packages/SystemUI/tests/src/com/android/systemui/qs/QSFragmentTest.java b/packages/SystemUI/tests/src/com/android/systemui/qs/QSFragmentTest.java
index 4caa50f..89606bf 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/qs/QSFragmentTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/qs/QSFragmentTest.java
@@ -52,14 +52,13 @@
 import com.android.systemui.SysuiBaseFragmentTest;
 import com.android.systemui.animation.ShadeInterpolation;
 import com.android.systemui.dump.DumpManager;
-import com.android.systemui.flags.FakeFeatureFlags;
 import com.android.systemui.media.controls.ui.MediaHost;
-import com.android.systemui.plugins.FalsingManager;
 import com.android.systemui.qs.customize.QSCustomizerController;
 import com.android.systemui.qs.dagger.QSFragmentComponent;
 import com.android.systemui.qs.external.TileServiceRequestController;
 import com.android.systemui.qs.footer.ui.binder.FooterActionsViewBinder;
 import com.android.systemui.qs.footer.ui.viewmodel.FooterActionsViewModel;
+import com.android.systemui.qs.logging.QSLogger;
 import com.android.systemui.settings.FakeDisplayTracker;
 import com.android.systemui.statusbar.CommandQueue;
 import com.android.systemui.statusbar.StatusBarState;
@@ -86,7 +85,6 @@
     @Mock private MediaHost mQSMediaHost;
     @Mock private MediaHost mQQSMediaHost;
     @Mock private KeyguardBypassController mBypassController;
-    @Mock private FalsingManager mFalsingManager;
     @Mock private TileServiceRequestController.Builder mTileServiceRequestControllerBuilder;
     @Mock private TileServiceRequestController mTileServiceRequestController;
     @Mock private QSCustomizerController mQsCustomizerController;
@@ -503,11 +501,9 @@
         setUpMedia();
         setUpOther();
 
-        FakeFeatureFlags featureFlags = new FakeFeatureFlags();
         return new QSFragment(
                 new RemoteInputQuickSettingsDisabler(
                         context, commandQueue, mock(ConfigurationController.class)),
-                mock(QSTileHost.class),
                 mStatusBarStateController,
                 commandQueue,
                 mQSMediaHost,
@@ -515,9 +511,8 @@
                 mBypassController,
                 mQsComponentFactory,
                 mock(QSFragmentDisableFlagsLogger.class),
-                mFalsingManager,
                 mock(DumpManager.class),
-                featureFlags,
+                mock(QSLogger.class),
                 mock(FooterActionsController.class),
                 mFooterActionsViewModelFactory);
     }