stdin.patch

diff --git c/src/widgets/kernel/qwidget.cpp i/src/widgets/kernel/qwidget.cpp
index fcb18d7c187..b7db1c56b0c 100644
--- c/src/widgets/kernel/qwidget.cpp
+++ i/src/widgets/kernel/qwidget.cpp
@@ -8488,8 +8488,10 @@ bool QWidgetPrivate::close()
     // Close native widgets via QWindow::close() in order to run QWindow
     // close code. The QWidget-specific close code in handleClose() will
     // in this case be called from the Close event handler in QWidgetWindow.
-    if (QWindow *widgetWindow = windowHandle())
-        return widgetWindow->close();
+    if (QWindow *widgetWindow = windowHandle()) {
+        if (widgetWindow->handle())
+            return widgetWindow->close();
+    }
 
     return handleClose(QWidgetPrivate::CloseWithEvent);
 }