diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelViewController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelViewController.java
index be8cd6a6481cb..31797d1faa612 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelViewController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelViewController.java
@@ -19,6 +19,8 @@ package com.android.systemui.statusbar.phone;
 import static com.android.systemui.statusbar.notification.ActivityLaunchAnimator.ExpandAnimationParameters;
 import static com.android.systemui.statusbar.notification.stack.NotificationStackScrollLayout.ROWS_ALL;
 
+import static java.lang.Float.isNaN;
+
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ValueAnimator;
@@ -2009,7 +2011,12 @@ public class NotificationPanelViewController extends PanelViewController {
 
     @Override
     protected float getOverExpansionAmount() {
-        return mNotificationStackScroller.getCurrentOverScrollAmount(true /* top */);
+        float result = mNotificationStackScroller.getCurrentOverScrollAmount(true /* top */);
+        if (isNaN(result)) {
+            Log.wtf(TAG, "OverExpansionAmount is NaN!");
+        }
+
+        return result;
     }
 
     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelViewController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelViewController.java
index 83cc4e33e2db2..f7d403f667cbc 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelViewController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelViewController.java
@@ -16,6 +16,8 @@
 
 package com.android.systemui.statusbar.phone;
 
+import static java.lang.Float.isNaN;
+
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ObjectAnimator;
@@ -638,6 +640,9 @@ public abstract class PanelViewController {
     }
 
     public void setExpandedHeightInternal(float h) {
+        if (isNaN(h)) {
+            Log.wtf(TAG, "ExpandedHeight set to NaN");
+        }
         if (mExpandLatencyTracking && h != 0f) {
             DejankUtils.postAfterTraversal(
                     () -> mLatencyTracker.onActionEnd(LatencyTracker.ACTION_EXPAND_PANEL));