diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp
index e504de37725665653bdea8c65cb28720f03512cf..4c00110bc055b5f49be9c3124da0d87e75a5637b 100644
--- a/src/client/qwaylandwindow.cpp
+++ b/src/client/qwaylandwindow.cpp
@@ -262,6 +262,7 @@ void QWaylandWindow::setGeometry_helper(const QRect &rect)
     if (mSubSurfaceWindow) {
         QMargins m = QPlatformWindow::parent()->frameMargins();
         mSubSurfaceWindow->set_position(rect.x() + m.left(), rect.y() + m.top());
+        mSubSurfaceWindow->parent()->window()->requestUpdate();
     } else if (shellSurface() && window()->transientParent() && window()->type() != Qt::Popup)
         shellSurface()->updateTransientParent(window()->transientParent());
 }
@@ -638,6 +639,8 @@ bool QWaylandWindow::createDecoration()
             QMargins m = frameMargins();
             subsurf->set_position(pos.x() + m.left(), pos.y() + m.top());
         }
+        if (!mChildren.isEmpty())
+            window()->requestUpdate();
     }
 
     return mWindowDecoration;