QML background is not rendered when Camera element is used on Symbian

import Qt 4.7
import QtMultimediaKit 1.1

Rectangle {
    width: 360
    height: 640
    color: "blue"

    MouseArea {
        anchors.fill: parent
        onClicked: Qt.quit()
    }

    Camera {
        id: camera 
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.verticalCenter: parent.verticalCenter
        width: 250
        height: 250
    }
}