Version: GXT-3.0.4-SNAPSHOT

Description:
When I call "setPredefinedButtons()" of the ProgressMessageBox instance, then progress bar is not visible. If I call it with parameter, like: "setPredefinedButtons(PredefinedButton.OK)" then everything works OK.

Solution:
onResize method of the ProgressMessageBox class that works correctly when I use "setPredefinedButtons()".
Code:
    @Override
    protected void onResize(int width, int height)
    {
        super.onResize(width, height);
        if ( width != -1 ) {
            progressBar.setWidth(width - getFrameSize().getWidth());
        }
    }