[2.1.3 / 2.2.0 Beta] Dialog + Firefox = Maximize bug

[SopGreg]

Hi,

there is a bug with maximized dialogs (that means GXT windows with a buttonbar):
- the maximized height is larger than the container height, a scrollbar is visible and the buttonbar is below the botton viewport edge
- the buttonbar gets a strange color
- this only happens in firefox (3.6.x here)
- this also happened in 2.1.3, so it's not a 2.2.0 specific bug

The test case is extremely simple:

import com.extjs.gxt.ui.client.widget.Dialog;
import com.google.gwt.core.client.EntryPoint;
 
public class GxtBugs implements EntryPoint {
    public void onModuleLoad() {
        Dialog dialog = new Dialog();
        dialog.setMaximizable(true);
        dialog.setSize(400, 400);
        dialog.show();
        dialog.maximize();
    }
} 

let me know if you need more information

regards