Multiple events for one android back click

Get too many press/release events when clicking only once on the android back-key. Building for arm7/android.

Motivation is to make a pressAndHold event for the back-key, then I found this issue. A test example is attached.

First, creating a default qt/cpp project. Installing an event-filter to the main.cpp/app to filter away auto-repeat events when holding down a key.

When printing out what happens, I see this when pressing down (and holding down for some seconds) and then releases the Android back-key. The log below is both from the event-filter and from the application, see attached source code for details. Note that the application get two press events and one release event.

Application snippet:

FocusScope {
            focus: true

            Keys.onPressed: {
                event.accepted = true
                console.debug("Application onPressed")
            }
            Keys.onReleased: {
                event.accepted = true
                console.debug("Application onReleased")
            }
        }

Eventfilter snippet:

bool KeyEventFilter::eventFilter(QObject *obj, QEvent *e){
    if(!(e->type() == QEvent::KeyPress ||
            (e->type() == QEvent::KeyRelease)))
        return QObject::eventFilter(obj, e);

    QKeyEvent *keyEvent = static_cast<QKeyEvent*>(e);
    if(keyEvent->isAutoRepeat())
    {
        e->ignore();
        return true;
    }
    qDebug() << "Filtered event: " << keyEvent->key() << e->type() << keyEvent->timestamp();
    return QObject::eventFilter(obj, e);
}

Bug: I would have assumed only one press event to the application.

D/libAndroidBackTest.so(31135): ..\AndroidBackTest\keyeventfilter.cpp:22 (virtual bool KeyEventFilter::eventFilter(QObject*, QEvent*)): Filtered event: 16777313 6 21383
D/libAndroidBackTest.so(31135): ..\AndroidBackTest\keyeventfilter.cpp:22 (virtual bool KeyEventFilter::eventFilter(QObject*, QEvent*)): Filtered event: 16777313 6 21383
D/libAndroidBackTest.so(31135): qrc:/main.qml:32 (onPressed): qml: Application onPressed
D/libAndroidBackTest.so(31135): ..\AndroidBackTest\keyeventfilter.cpp:22 (virtual bool KeyEventFilter::eventFilter(QObject*, QEvent*)): Filtered event: 16777313 6 21885
D/libAndroidBackTest.so(31135): ..\AndroidBackTest\keyeventfilter.cpp:22 (virtual bool KeyEventFilter::eventFilter(QObject*, QEvent*)): Filtered event: 16777313 6 21885
D/libAndroidBackTest.so(31135): qrc:/main.qml:32 (onPressed): qml: Application onPressed
D/libAndroidBackTest.so(31135): ..\AndroidBackTest\keyeventfilter.cpp:22 (virtual bool KeyEventFilter::eventFilter(QObject*, QEvent*)): Filtered event: 16777313 7 23292
D/libAndroidBackTest.so(31135): ..\AndroidBackTest\keyeventfilter.cpp:22 (virtual bool KeyEventFilter::eventFilter(QObject*, QEvent*)): Filtered event: 16777313 7 23292
D/libAndroidBackTest.so(31135): qrc:/main.qml:36 (onReleased): qml: Application onReleased