diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ExpandableNotificationRow.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ExpandableNotificationRow.java
index 7e3d004..3866f79 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ExpandableNotificationRow.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ExpandableNotificationRow.java
@@ -3680,6 +3680,10 @@
         return super.disallowSingleClick(event);
     }
 
+    // TODO: b/388470175 - Although this does get triggered when a notification
+    // is expanded by the system (e.g. the first notication in the shade), it
+    // will not be when a notification is collapsed by the system (such as when
+    // the shade is closed).
     private void onExpansionChanged(boolean userAction, boolean wasExpanded) {
         boolean nowExpanded = isExpanded();
         if (mIsSummaryWithChildren && (!mIsMinimized || wasExpanded)) {