diff --git a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
index ec6032d9ed..773817f20c 100644
--- a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
+++ b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
@@ -45,6 +45,7 @@ import android.os.Message;
 import android.os.Messenger;
 import android.os.ParcelUuid;
 import android.os.UserHandle;
+import android.util.Log;
 import android.view.Surface;
 import android.view.SurfaceControl;
 import android.view.SurfaceControl.Transaction;
@@ -57,6 +58,7 @@ import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.anim.SpringAnimationBuilder;
+import com.android.launcher3.testing.TestProtocol;
 import com.android.quickstep.fallback.FallbackRecentsView;
 import com.android.quickstep.fallback.RecentsState;
 import com.android.quickstep.util.AppCloseConfig;
@@ -138,6 +140,10 @@ public class FallbackSwipeHandler extends
         mActiveAnimationFactory = new FallbackHomeAnimationFactory(duration);
         ActivityOptions options = ActivityOptions.makeCustomAnimation(mContext, 0, 0);
         Intent intent = new Intent(mGestureState.getHomeIntent());
+        if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+            Log.d(TestProtocol.L3_SWIPE_TO_HOME,
+                    "createHomeAnimationFactory: " + intent.toShortString(true, true, true, false));
+        }
         mActiveAnimationFactory.addGestureContract(intent);
         try {
             mContext.startActivity(intent, options.toBundle());
diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
index e9482219de..3c05a3e4ce 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
@@ -20,12 +20,14 @@ import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.ACT
 
 import android.graphics.Rect;
 import android.util.ArraySet;
+import android.util.Log;
 import android.view.RemoteAnimationTarget;
 
 import androidx.annotation.BinderThread;
 import androidx.annotation.UiThread;
 
 import com.android.launcher3.Utilities;
+import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.util.Preconditions;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.RecentsAnimationControllerCompat;
@@ -95,6 +97,9 @@ public class RecentsAnimationCallbacks implements
             RemoteAnimationTargetCompat[] appTargets,
             RemoteAnimationTargetCompat[] wallpaperTargets,
             Rect homeContentInsets, Rect minimizedHomeBounds) {
+        if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+            Log.d(TestProtocol.L3_SWIPE_TO_HOME, "RecentsAnimationCallbacks.onAnimationStart");
+        }
         // Convert appTargets to type RemoteAnimationTarget for all apps except Home app
         RemoteAnimationTarget[] nonHomeApps = Arrays.stream(appTargets)
                 .filter(remoteAnimationTarget ->
@@ -116,6 +121,10 @@ public class RecentsAnimationCallbacks implements
                     mController::finishAnimationToApp);
         } else {
             Utilities.postAsyncCallback(MAIN_EXECUTOR.getHandler(), () -> {
+                if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+                    Log.d(TestProtocol.L3_SWIPE_TO_HOME,
+                            "RecentsAnimationCallbacks.onAnimationStart callback");
+                }
                 for (RecentsAnimationListener listener : getListeners()) {
                     listener.onRecentsAnimationStart(mController, targets);
                 }
diff --git a/src/com/android/launcher3/statemanager/StateManager.java b/src/com/android/launcher3/statemanager/StateManager.java
index b34af975bd..24d3fd4e38 100644
--- a/src/com/android/launcher3/statemanager/StateManager.java
+++ b/src/com/android/launcher3/statemanager/StateManager.java
@@ -18,6 +18,7 @@ package com.android.launcher3.statemanager;
 
 import static android.animation.ValueAnimator.areAnimatorsEnabled;
 
+import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.anim.AnimatorPlaybackController.callListenerCommandRecursively;
 import static com.android.launcher3.states.StateAnimationConfig.SKIP_ALL_ANIMATIONS;
 
@@ -27,12 +28,14 @@ import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.os.Handler;
 import android.os.Looper;
+import android.util.Log;
 
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.states.StateAnimationConfig;
 import com.android.launcher3.states.StateAnimationConfig.AnimationFlags;
+import com.android.launcher3.testing.TestProtocol;
 
 import java.io.PrintWriter;
 import java.util.ArrayList;
@@ -253,6 +256,9 @@ public class StateManager<STATE_TYPE extends BaseState<STATE_TYPE>> {
         if (listener != null) {
             animation.addListener(listener);
         }
+        if (TestProtocol.sDebugTracing && state == NORMAL) {
+            Log.d(TestProtocol.L3_SWIPE_TO_HOME, "goToStateAnimated: " + state);
+        }
         mUiHandler.post(new StartAnimRunnable(animation));
     }
 
@@ -328,11 +334,17 @@ public class StateManager<STATE_TYPE extends BaseState<STATE_TYPE>> {
             @Override
             public void onAnimationStart(Animator animation) {
                 // Change the internal state only when the transition actually starts
+                if (TestProtocol.sDebugTracing && state == NORMAL) {
+                    Log.d(TestProtocol.L3_SWIPE_TO_HOME, "onAnimationStart: " + state);
+                }
                 onStateTransitionStart(state);
             }
 
             @Override
             public void onAnimationSuccess(Animator animator) {
+                if (TestProtocol.sDebugTracing && state == NORMAL) {
+                    Log.d(TestProtocol.L3_SWIPE_TO_HOME, "onAnimationEnd: " + state);
+                }
                 onStateTransitionEnd(state);
             }
         };
diff --git a/src/com/android/launcher3/testing/TestProtocol.java b/src/com/android/launcher3/testing/TestProtocol.java
index 1c5b31b1f5..c4848112ef 100644
--- a/src/com/android/launcher3/testing/TestProtocol.java
+++ b/src/com/android/launcher3/testing/TestProtocol.java
@@ -119,4 +119,5 @@ public final class TestProtocol {
     public static final String FALLBACK_ACTIVITY_NO_SET = "b/181019015";
     public static final String THIRD_PARTY_LAUNCHER_NOT_SET = "b/187080582";
     public static final String TASK_VIEW_ID_CRASH = "b/195430732";
+    public static final String L3_SWIPE_TO_HOME = "b/192018189";
 }