Text inside MultiPointTouchArea has invalid coordinates on touch events

Hi,

I'm facing an issue on the MultiPointTouchArea since I move from Qt5.8.0 to Qt5.12.1.

I've got a lot of nested Items that contains Text elements in a MultiPointToucheArea. Before the update, when I hit my touch screen the coordinates were the screen coordinates of my container. Now, on Text elements, my coordinates are relatives to the top left of the Text element and not the container.

Here is a code sample that reproduce the issue:

Item {
    id:  root
    width : 600
    height : width
    MultiPointTouchArea {
        anchors.fill : parent
        onPressed: console.log(touchPoints[0].x +" " + touchPoints[0].y)
        Text {
           anchors.centerIn: parent
           text : "test !!!!!"
           color : "white"
        }
        Rectangle {
            width : 100
            height : width
            anchors.horizontalCenter: parent.horizontalCenter
            anchors.bottom:parent.bottom
            color :"red"
        }
    }
}

Note that the issue is only present with tactile interactions, with mouse everything works fine.

Thank you,
Olivier.