Pane/Page with Layout steals all events of parent MouseArea

import QtQuick 2.6
import QtQuick.Window 2.2
import QtQuick.Controls 2.1
import QtQuick.Layouts 1.3

Window {
    id: window
    visible: true
    width: 640
    height: 480
    MouseArea {
        id: area
        anchors.fill: parent
        hoverEnabled: true
        preventStealing: true
        propagateComposedEvents: false
        property color positionColor: Qt.hsla(mouseX / width, 1, mouseY / height, 1);
        onPositionChanged: console.log(new Date().getTime())
        onClicked: console.log("CLICK")
        Pane {
            //anchors.fill: parent //this will completely break it
            leftPadding: 0
            rightPadding: 0
            topPadding: 0
            bottomPadding: 0
            RowLayout {
                anchors.fill: parent
                Rectangle {
                    color: area.positionColor
                    Layout.preferredWidth: window.width / 2
                    Layout.preferredHeight: window.height
                }
            }
        }
    }
}