Incorrect height and location of ComboBox on Mac OS X

import QtQuick 2.3
import QtQuick.Controls 1.2

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

    ComboBox {
        anchors.bottom: parent.bottom
        model: ListModel {
            ListElement { name: "Line one" }
            ListElement { name: "Line two" }
            ListElement { name: "Line three" }
            ListElement { name: "Line four" }
            ListElement { name: "Line five" }
        }
        textRole: "name"
    }

    Text {
        text: qsTr("Hello World")
        anchors.centerIn: parent
    }
}