diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
index 521221136c801..28379f4913182 100644
--- a/services/core/java/com/android/server/wm/DisplayContent.java
+++ b/services/core/java/com/android/server/wm/DisplayContent.java
@@ -429,6 +429,7 @@ class DisplayContent {
         }
         if (getDockedStackVisibleForUserLocked() != null) {
             mDividerControllerLocked.getTouchRegion(mTmpRect);
+            mTmpRegion.set(mTmpRect);
             mTouchExcludeRegion.op(mTmpRegion, Op.UNION);
         }
         if (mTapDetector != null) {