AnimatedImage does not notify on status change

import Qt 4.7

Rectangle {
    width: 500
    height: 500

    AnimatedImage {
        anchors.centerIn: parent
        asynchronous: true
        source: "http://doc.qt.nokia.com/4.7/images/flickable.gif"
        opacity: status == AnimatedImage.Ready ? 1 : 0
        onStatusChanged: console.log(status)

        Behavior on opacity {
            NumberAnimation { duration: 1000 }
        }
    }
}