QtQuick : Mouse handling broken in during external drag.

import QtQuick 2.2

Rectangle {
    width: 200
    height: 200
    color: "red"
    MouseArea {
        id: mouseArea
        anchors.fill: parent
        drag.target: draggable
        onPressed: { console.log("mousearea::onPressed") }
        onReleased: { console.log("mousearea::onReleased") }
    }
    Rectangle {
        id: draggable
        width: 100
        height: 100
        color: "green"
        Drag.active: mouseArea.drag.active
        Drag.keys : ["text/plain"]
        Drag.mimeData: { "text/plain": "hello" }
        Drag.dragType: Drag.Automatic
    }
}