MapPolygon inside Repeater not working

import QtQuick 2.6
import QtQuick.Controls 1.5
import QtLocation 5.6

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

    Map {
        anchors.fill: parent
        plugin: Plugin { name: "osm" }

        center { latitude: -27; longitude: 153.0 }

        height: 1; width: 1 // https://bugreports.qt.io/browse/QTBUG-52030

        zoomLevel: 6

        Repeater {
            model: 3 // some dynamic c++ model etc

            MapPolyline {
                line.width: 3
                line.color: 'green'
                path: [
                    { latitude: -27 + index, longitude: 153.0 },
                    { latitude: -27 + index, longitude: 154.1 },
                    { latitude: -28 + index, longitude: 153.5 },
                    { latitude: -29 + index, longitude: 153.5 }
                ]
            }
        }
    }
}