diff --git a/components/containmentlayoutmanager/itemcontainer.cpp b/components/containmentlayoutmanager/itemcontainer.cpp
--- a/components/containmentlayoutmanager/itemcontainer.cpp
+++ b/components/containmentlayoutmanager/itemcontainer.cpp
@@ -442,7 +442,7 @@
 
     QEvent ev(QEvent::UngrabMouse);
 
-    item->window()->sendEvent(item, &ev);
+    QCoreApplication::sendEvent(item, &ev);
 }
 
 bool ItemContainer::childMouseEventFilter(QQuickItem *item, QEvent *event)