Mac, QML: focus attribute seems to be broken

import Qt 4.7

Rectangle {
    id: root
    width:300; height:200
    border.width: 50
    focus: false

    states: [
        State {
            when: root.focus

            StateChangeScript {
                script: console.debug("Got focus");
            }

            PropertyChanges {
                target: root
                color: "brown"
                border.color: "blue"
            }
        }
    ]
}