--- a/dom/events/EventStateManager.cpp
+++ b/dom/events/EventStateManager.cpp
@@ -648,16 +648,17 @@ EventStateManager::PreHandleEvent(nsPres
     break;
   }
   case eMouseUp: {
     switch (mouseEvent->button) {
       case WidgetMouseEvent::eLeftButton:
         if (Prefs::ClickHoldContextMenu()) {
           KillClickHoldTimer();
         }
+        mInTouchDrag = false;
         StopTrackingDragGesture();
         sNormalLMouseEventInProcess = false;
         // then fall through...
         MOZ_FALLTHROUGH;
       case WidgetMouseEvent::eRightButton:
       case WidgetMouseEvent::eMiddleButton:
         RefPtr<EventStateManager> esm = ESMFromContentOrThis(aOverrideClickTarget);
         esm->SetClickCount(mouseEvent, aStatus, aOverrideClickTarget);