as dialog, don't close when dialog has focus

shell/panelconfigview.cpp

@@ -167,6 +167,11 @@ void PanelConfigView::hideEvent(QHideEvent *ev)
 
 void PanelConfigView::focusOutEvent(QFocusEvent *ev)
 {
+    const QWindow *focusWindow = QGuiApplication::focusWindow();
+
+    if (focusWindow && (focusWindow->flags() & Qt::Popup || focusWindow->objectName() == QLatin1String("QMenuClassWindow"))) {
+        return;
+    }
     Q_UNUSED(ev)
     close();
 }