There is a new behavior of this bug in Beta1. If you try to add FramedPanel to the RootPanel and run web app in normal mode (not hosted mode, e.g. http://127.0.0.1:8888/TestingBeta1.html ), nothing is loaded, just plain html and there is an error in js console: err1.jpg err2.jpg
FramedPanel setHeaderVisible and setBodyBorder are now fixed in SVN. Changes will go out in the next release.
@raivis and @madmaxmatze please do not add new issues to an existing post, rather, create a new post. It is hard to manage when this happens.
@raivis I tested in web mode a FramedPanel being added directly to the RootPanel and the code works as expected. If you are still seeing issues with Beta 2, then create a new thread.
@madmaxmatze The toolbar will not hide its top border as you found (same as 2.X). As a workaround, you can hide the border of whatever is aligned on top of the the toolbar. If you think this should be changed, please submit a new thread.