Mac OS X and QML does not have a "perfect first frame"

Using the following QML file, the window will briefly flicker white before rendering the first frame. The render loop will handle the expose event synchronously and render a frame, so this would indicate that expose events are sent from the plugin either at the wrong time relating to when the window is actually being shown or that it the plugin does not flush after sending it.

Rectangle {
    width: 400
    height: 400
    color: "black"
    Text {
        text: "Hello"
        anchors.centerIn: parent
        color: "white"
    }
}

If you have problems seeing it, change your desktop background to black to intensify the effect.

Note: Adding texts to a QML file will add ~1 second to the startup time. If remove the text element, the startup is instant without flicker.