qmlscene does not cleanup top level windows

// main.qml
import QtQuick 2.1
import QtQuick.Window 2.1
import QtQuick.XmlListModel 2.0

Window {
    XmlListModel {
        id: model
        Component.onCompleted: console.log("Component.onCompleted:", model)
        Component.onDestruction: console.log("Component.onDestruction:", model)
    }
}