QQuickWidget hidden on Android

I have a QQuickWidget, in a widget-based application (QT 5.5.1, QMainWindow and such). The qquickwidget is added to a frame's layout, itself belonging to a qdialog.

That works nicely on Windows, but on Android the QDialog is not shown, or is shown in the background. I can see it only after minimizing/resuming the application using the android home button.

If I hide the QMainWindow while the dialog is executing, and show it back in the dialog destructor, then the dialog and the QQuickWidget are shown directly and are working fine.

I saw QTBUG-41467 and some others related to that, but they are supposed to be fixed as I understand.

Thanks
Philippe Lelong