Qt 5.7 on Android - app hangs after sleep.

Problem: I open the app. wait for the phone to sleep/lock (or you can click on the power button once). Then unlock the phone and the app hangs (does not respond). Then when I click on home and then resume the app, it works again.

Actually the display hangs while the control works (pretty strange).

How I manages to solve it:

In the main qml file:

    Connections {

        target: Qt.application

        onStateChanged: {

            switch (Qt.application.state) {

            case Qt.ApplicationSuspended:

                console.debug("application suspended")

                break

            case Qt.ApplicationHidden:

                console.debug("Application hidden")

                break

            case Qt.ApplicationActive:

                //update()

                //Qt.application.layoutDirection = Qt.LeftToRight   //.setLayoutDirection(Qt.LeftToRight)

                //raise()

                //show()

                //requestActivate()

                //alert(10)

                hide()

                show()

                console.debug("Application active")

                break

            case Qt.ApplicationInactive:

                console.debug("Application inactive")

                break

            }

        }

    }