Loader with sourceComponent results in double calls to onLoaded

import QtQuick 1.0

Item {
    width: 640
    height: 480

    Loader {
        sourceComponent: redRectComponent
        onLoaded: print("onLoaded called. status = " + status)
    }

    Component {
        id: redRectComponent
        Rectangle {
            width: 100
            height: 100
            color: "red"
        }
    }
}