diff --git a/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java b/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
index 7d52571..a5d4568 100644
--- a/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
+++ b/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
@@ -19,11 +19,13 @@
 
 import android.content.Context;
 import android.content.res.Resources;
+import android.util.Log;
 import android.view.MotionEvent;
 
 import com.android.launcher3.Alarm;
 import com.android.launcher3.R;
 import com.android.launcher3.compat.AccessibilityManagerCompat;
+import com.android.launcher3.testing.TestProtocol;
 
 /**
  * Given positions along x- or y-axis, tracks velocity and acceleration and determines when there is
@@ -84,6 +86,9 @@
         mSpeedSlow = res.getDimension(R.dimen.motion_pause_detector_speed_slow);
         mSpeedSomewhatFast = res.getDimension(R.dimen.motion_pause_detector_speed_somewhat_fast);
         mSpeedFast = res.getDimension(R.dimen.motion_pause_detector_speed_fast);
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.PAUSE_NOT_DETECTED, "creating alarm");
+        }
         mForcePauseTimeout = new Alarm();
         mForcePauseTimeout.setOnAlarmListener(alarm -> updatePaused(true /* isPaused */));
         mMakePauseHarderToTrigger = makePauseHarderToTrigger;
@@ -120,6 +125,9 @@
      * @param pointerIndex Index for the pointer being tracked in the motion event
      */
     public void addPosition(MotionEvent ev, int pointerIndex) {
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.PAUSE_NOT_DETECTED, "setting alarm");
+        }
         mForcePauseTimeout.setAlarm(mMakePauseHarderToTrigger
                 ? HARDER_TRIGGER_TIMEOUT
                 : FORCE_PAUSE_TIMEOUT);
@@ -167,6 +175,9 @@
     }
 
     private void updatePaused(boolean isPaused) {
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.PAUSE_NOT_DETECTED, "updatePaused: " + isPaused);
+        }
         if (mDisallowPause) {
             isPaused = false;
         }
@@ -188,6 +199,9 @@
         setOnMotionPauseListener(null);
         mIsPaused = mHasEverBeenPaused = false;
         mSlowStartTime = 0;
+        if (TestProtocol.sDebugTracing) {
+            Log.d(TestProtocol.PAUSE_NOT_DETECTED, "canceling alarm");
+        }
         mForcePauseTimeout.cancelAlarm();
     }
 
diff --git a/src/com/android/launcher3/testing/TestProtocol.java b/src/com/android/launcher3/testing/TestProtocol.java
index fba6269..32c6a1d 100644
--- a/src/com/android/launcher3/testing/TestProtocol.java
+++ b/src/com/android/launcher3/testing/TestProtocol.java
@@ -99,4 +99,5 @@
     public static final String REQUEST_MOCK_SENSOR_ROTATION = "mock-sensor-rotation";
 
     public static final String PERMANENT_DIAG_TAG = "TaplTarget";
+    public static final String PAUSE_NOT_DETECTED = "b/139891609";
 }