Only receiving Tap and TapAndHold gestures in QGraphicsObject

Asperamanca

I am trying to implement paging in a QGraphicsObject using the swipe gesture.
First I enable gestures in my QGraphicsObject-derived class:

grabGesture(Qt::SwipeGesture);
enableGestureForViews(scene(),Qt::SwipeGesture);

EnableGesturesForViews iterates through all views and enables the gesture for each:

MyClass::enableGesturesForViews(QGraphicsScene* const pScene, const Qt::GestureType eGesture)
{
    const auto& views = pScene->views();
    for(auto* const pView : views)
        {
            enableGestureRecursive(pView, eGesture);
        }
}

MyClass::enableGestureRecursive(QWidget* const pWidget, const Qt::GestureType eGesture)
{
    if (pWidget == nullptr)
    {
        return;
    }
    pWidget->grabGesture(eGesture);
    pWidget->setAttribute(Qt::WA_AcceptTouchEvents);
    enableGestureRecursive(pWidget->parentWidget(),eGesture);
}

As you can see, I take no chances. Since the docs isn't very specific where to enable what, I go up all the way to my top-level widget and enable both the gesture and touch.

In my sceneEvent, I expect the QGestureEvent to arrive:

    if (event->type() == QEvent::Gesture)
    {
        if (handleGestureEvent(event))
        {
            return true;
        }
    }

The content of handleGestureEvent is irrelevant so far, as I never get there. No single gesture is recognized.

When I enabled all gestures for testing, I did receive Tap and TapAndHold gestures, but neither Pan, Pinch nor Swipe.

What am I doing wrong?