iOS: QGuiApplication in background gets state=Qt::ApplicationSuspended

I have a QML/C++ application that runs in background on iOS (using UIBackgronudMode=audio).

However, when I connect (in QML) to the Qt.application.stateChanged signal, I see that the following state changes happen when going to background:

• from ApplicationActive -> ApplicationInactive
• from ApplicationInactive -> ApplicationSuspended

while according to the documentation, the state should change to ApplicationHidden

Is there another way to detect the difference between Hidden and Suspended?