ActiveFocus not changing after Qml Window re activated

[Nando]

Hello,
running on MacOS i have a Window or ApplicationWindow which gets created from C++.

I think the problem must be how i create the window from C++ because if i run it in plain qml it works fine...

QQmlApplicationEngine engine; // is a class member declared in .h

vod MainWindow::MyWindow()
{
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty("DatabaseManager", &DatabaseManager::instance());
    qmlRegisterType<SomeType>("my.qmlcomponents", 1, 0, "SomeType");
    connect(&m_engine, SIGNAL(objectCreated(QObject *, const QUrl &)),
            this, SLOT(qmlEngineObjectCreated(QObject *, const QUrl &)));
    engine.load(QUrl("qrc:/qml/EditDialog.qml"));
}

void MainWindow::qmlEngineObjectCreated(QObject *object, const QUrl &url)
{
    m_resolverQmlObject = object;  // m_resolverQmlObject is QObject type

    QWidget *w = QWidget::createWindowContainer(qobject_cast<QQuickWindow*>(object), this);
    
    qDebug() << "Got EditDialog";
    w->setParent(nullptr); // Without this the Window is not coming up
    w->setWindowModality(Qt::ApplicationModal);
    QQmlEngine::setObjectOwnership(m_resolverQmlObject, QQmlEngine::CppOwnership);
    w->show();
}
        

Inside the Window i have for example some TextField components.
Everything works fine. If i click inside a TextField it gets the focus and i can enter text.

And i see in my (root) Window onActiveFocusItemChanged gets triggered each time i click in another TextField.

Now if i click outside my application and the app looses focus and the click again into the application Window inside a TextField the TextField gets focus as before but no KeyEvents occur. So if i type the TextField does not show the typed characters.
Also onActiveFocusItemChanged gets not called anymore.

Any idea why activeFocusItem isn't updating after the Window lost focus and then got focus again?

Window {
    onActiveFocusItemChanged: {
        print("activeFocusItem: ", activeFocusItem)
    }

     RowLayout {
          anchors.fill: parent
          TextField {
              id: tf1
              onFocusChanged: {
                  print("TextField 1 got focus")
              }
          }
          TextField {
              id: tf2
              onFocusChanged: {
                  print("TextField 2 got focus")
              }
         }
    }
}

Greetings
Nando