Next beta already??
I can only see corrupted sizing gadget in WB (blitter onedot non-ce line mode is borken). I canīt duplicate anything reported here.
(it is usually bad idea to just report "it happens in AGA WB" when it is always nearly guaranteed to not happen in all WB configurations. Always test with non-modified WB disk images first)
Perhaps http://www.winuae.net/files/b/winuae.zip fixes it, perhaps not..