diff --git a/src/com/android/launcher3/LauncherStateManager.java b/src/com/android/launcher3/LauncherStateManager.java
index 3edd838..fe6b522 100644
--- a/src/com/android/launcher3/LauncherStateManager.java
+++ b/src/com/android/launcher3/LauncherStateManager.java
@@ -40,6 +40,7 @@
 import android.animation.AnimatorSet;
 import android.os.Handler;
 import android.os.Looper;
+import android.util.Log;
 
 import androidx.annotation.IntDef;
 
@@ -474,6 +475,11 @@
         // Only change the stable states after the transitions have finished
         if (state != mCurrentStableState) {
             mLastStableState = state.getHistoryForState(mCurrentStableState);
+            if (TestProtocol.sDebugTracing) {
+                Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG,
+                        "mCurrentStableState = " + state.getClass().getSimpleName() + " @ " +
+                                android.util.Log.getStackTraceString(new Throwable()));
+            }
             mCurrentStableState = state;
         }
 
diff --git a/src/com/android/launcher3/allapps/AllAppsTransitionController.java b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
index a7f89d9..c62fc3d 100644
--- a/src/com/android/launcher3/allapps/AllAppsTransitionController.java
+++ b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
@@ -14,6 +14,7 @@
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
+import android.util.Log;
 import android.util.Property;
 import android.view.animation.Interpolator;
 
@@ -29,6 +30,7 @@
 import com.android.launcher3.anim.AnimatorSetBuilder;
 import com.android.launcher3.anim.SpringObjectAnimator;
 import com.android.launcher3.anim.PropertySetter;
+import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.ScrimView;
@@ -162,6 +164,10 @@
     @Override
     public void setStateWithAnimation(LauncherState toState,
             AnimatorSetBuilder builder, AnimationConfig config) {
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG,
+                    "setStateWithAnimation " + toState.getClass().getSimpleName());
+        }
         float targetProgress = toState.getVerticalProgress(mLauncher);
         if (Float.compare(mProgress, targetProgress) == 0) {
             setAlphas(toState, config, builder);
diff --git a/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
index 9703aa6..4e5f7a5 100644
--- a/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
+++ b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
@@ -31,6 +31,7 @@
 import android.animation.AnimatorSet;
 import android.animation.ValueAnimator;
 import android.os.SystemClock;
+import android.util.Log;
 import android.view.HapticFeedbackConstants;
 import android.view.MotionEvent;
 
@@ -118,6 +119,9 @@
 
     @Override
     public final boolean onControllerInterceptTouchEvent(MotionEvent ev) {
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "onControllerInterceptTouchEvent 1 " + ev);
+        }
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
             mNoIntercept = !canInterceptTouch(ev);
             if (mNoIntercept) {
@@ -147,6 +151,9 @@
             return false;
         }
 
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "onControllerInterceptTouchEvent 2 ");
+        }
         onControllerTouchEvent(ev);
         return mDetector.isDraggingOrSettling();
     }
@@ -234,6 +241,9 @@
 
     @Override
     public void onDragStart(boolean start) {
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "onDragStart 1 " + start);
+        }
         mStartState = mLauncher.getStateManager().getState();
         if (mStartState == ALL_APPS) {
             mStartContainerType = LauncherLogProto.ContainerType.ALLAPPS;
@@ -243,6 +253,9 @@
             mStartContainerType = LauncherLogProto.ContainerType.TASKSWITCHER;
         }
         if (mCurrentAnimation == null) {
+            if (TestProtocol.sDebugTracing) {
+                Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "onDragStart 2");
+            }
             mFromState = mStartState;
             mToState = null;
             cancelAnimationControllers();
@@ -552,6 +565,9 @@
     }
 
     private void cancelAnimationControllers() {
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "cancelAnimationControllers");
+        }
         mCurrentAnimation = null;
         cancelAtomicComponentsController();
         mDetector.finishedScrolling();
diff --git a/src/com/android/launcher3/touch/SwipeDetector.java b/src/com/android/launcher3/touch/SwipeDetector.java
index 4616e58..3d45404 100644
--- a/src/com/android/launcher3/touch/SwipeDetector.java
+++ b/src/com/android/launcher3/touch/SwipeDetector.java
@@ -158,6 +158,9 @@
     // SETTLING -> (View settled) -> IDLE
 
     private void setState(ScrollState newState) {
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "setState -- start: " + newState);
+        }
         if (DBG) {
             Log.d(TAG, "setState:" + mState + "->" + newState);
         }
@@ -165,6 +168,9 @@
         if (newState == ScrollState.DRAGGING) {
             initializeDragging();
             if (mState == ScrollState.IDLE) {
+                if (TestProtocol.sDebugTracing) {
+                    Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "setState -- 1: " + newState);
+                }
                 reportDragStart(false /* recatch */);
             } else if (mState == ScrollState.SETTLING) {
                 reportDragStart(true /* recatch */);
@@ -318,9 +324,15 @@
                     break;
                 }
                 mDisplacement = mDir.getDisplacement(ev, pointerIndex, mDownPos, mIsRtl);
+                if (TestProtocol.sDebugTracing) {
+                    Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "onTouchEvent 1");
+                }
 
                 // handle state and listener calls.
                 if (mState != ScrollState.DRAGGING && shouldScrollStart(ev, pointerIndex)) {
+                    if (TestProtocol.sDebugTracing) {
+                        Log.d(TestProtocol.NO_ALLAPPS_EVENT_TAG, "onTouchEvent 2");
+                    }
                     setState(ScrollState.DRAGGING);
                 }
                 if (mState == ScrollState.DRAGGING) {