Animator does not stop even if running==false

import QtQuick 2.4
import QtQuick.Window 2.2
import QtQuick.Controls 1.2

Window {
    visible: true
    width: 300
    height: 100

    Text {
        id: label
        text: "abc"
    }

    XAnimator {
        id: anim
        loops: Animation.Infinite
        running: true
        target: label
        from: 0
        to: 50
        duration: 1000
        onStopped: console.log("animator was stopped")
    }

    MouseArea {
        anchors.fill: parent
        onClicked: {
            console.log(">onClicked");
            if (anim.paused)
                anim.resume();
            else
                anim.pause();
        //    anim.running = !anim.running
            console.log("<onClicked");
        }
    }

    Component.onCompleted: {
        console.log(">Component.onCompleted");
        anim.pause();
//        anim.running = false
        console.log("<Component.onCompleted");
    }

    Text {
        anchors.bottom: parent.bottom
        text: "is running: " + anim.running + ", is paused: " + anim.paused
    }

}