when I'm working with IE9 and the IE8 compatibility mode is enabled then everything works fine in ma app.
But when I turn off that compatibility mode, I get many different issues:

1. When I click on a button with a menu it is not closed when I e.g. click another button (see screenshot)
2. Very often I get some strange exception shown on the other screenshot

Is there some fix/workaroung for that?

I'm using gxt-2.2.6-gwt2.jar build in June last year from SVN with GWT 2.0.4

Thanks in advance for any help.