ProgressBar: strange difference between 1% and 99% (especially in IE)

[gdlm]

GXT 3.0.0
This code:

public class ProgressBarCellExample2 implements EntryPoint, IsWidget {

    public Widget asWidget() {
        VerticalLayoutContainer container = new VerticalLayoutContainer();
        container.setWidth(500);

        container.add(new Label("Difference between 1% and 99%"),
            new VerticalLayoutContainer.VerticalLayoutData(1, -1, new Margins(0, 0, 10, 0)));

        ProgressBar bar = new ProgressBar();
        bar.updateProgress(0.01, "{0}%");
        container.add(bar, new VerticalLayoutContainer.VerticalLayoutData(1, -1, new Margins(0, 0, 10, 0)));
        ProgressBar bar2 = new ProgressBar();
        bar2.updateProgress(0.99, "{0}%");
        container.add(bar2, new VerticalLayoutContainer.VerticalLayoutData(1, -1, new Margins(0, 0, 10, 0)));

        SimpleContainer simple = new SimpleContainer();
        simple.add(container, new MarginData(20));
        return simple;

    }

    public void onModuleLoad() {
        Viewport viewport = new Viewport();
        viewport.add(asWidget());
        RootPanel.get().add(viewport);
    }
}

run in IE8 gives this result:
scscreenshot120502004ie.png
run in FF 11 gives this result:
scscreenshot120502005ff.png
and run in Chrome 18 gives this result:
scscreenshot120502004ch.png
I expect 1% on the left side of the ProgressBar to be drawn with the same width as on the right side.

[gdlm]

I see that yesterday several bug reports got addressed and did get a reaction.
Is this one forgotten somehow?

[gdlm]

A reaction of Sencha would be appreciated