ProgressBar broken?

Hello,

I want to show the users quota by using the ProgressBar.

Pretty standard, taken from the book.

final ProgressBar bar = new ProgressBar(0.0f); 
hl.addComponent(bar);

hl.addComponent(new Button("Increase",
new Button.ClickListener() {
    @Override public void buttonClick(Button.ClickEvent event) {
        float current = bar.getValue();
        if (current < 1.0f) bar.setValue(current + 0.10f);
    }
 }));

But it isn't ivisilbe (setVisible(true) of course)

http://i.imgur.com/C1CwMKz.png

HTML -> http://i.imgur.com/T3fkksg.png
 

Strange, that exact example works just fine here. You could be experiencing some layout problem.

Odd, it looks like there's no difference in the bar when the value is between 0.0 and 0.1.