GridView key navigation: viewport doesn't update to last row/column when key is held down

import QtQuick 2.0

Rectangle {
    width: 300; height: 400
    color: "white"

    ListModel {
        id: appModel
        Component.onCompleted: {
            for (var i=0; i<100; i++) {
                appModel.append({'name': 'blah ' + i})
            }
        }
    }

    Component {
        id: appHighlight
        Rectangle {
            width: 50; height: 80; color: "lightsteelblue"
            z: 10; opacity: 0.8
        }
    }

    GridView {
        cellWidth: 50; cellHeight: 50
        focus: true
        anchors.fill: parent
        highlight: appHighlight
        model: appModel
        delegate: Rectangle {
            width: 50; height: 50; border.width: 1
            Text { text: index }
        }
    }
}