GlassPanel not showing a second time on IE

What steps will reproduce the problem?
1. Attach GlassPanel to the RootPanel like:
        GlassPanel glassPanel = new GlassPanel(false);
        RootPanel.get().add(glassPanel, 0, 0);
2. After removing the first GlassPanel create a new GlassPanel instance and 
attach again (like 
above)

What is the expected output? What do you see instead?
The GlassPanel is not showing on IE6 and IE7.

What version of the product are you using? On what operating system?
I'm using GWT1.5rc and gwt-incubator_1-4_final.jar

Please provide any additional information below.
The reason for this is, that the GlassPanelImplIE6 is statically stored in the 
GlassPanel.
And the fields lastDocumentClientWidth, lastDocumentClientHeight in 
GlassPanelImplIE6 are not 
cleared when creating a new GlassPanel instance.

Original issue reported on code.google.com by m...@censhare.de on 27 Jun 2008 at 11:52

petoendre / google-web-toolkit-incubator

GlassPanel not showing a second time on IE #122