1) If you invite someone to Arena while they're in the Options menu and then launch Arena they see the Options menu and when they click any of the buttons their game will crash.
2) When in Arena the chat will break once after a while (possibly when there should be a scroll bar).
3) When in Arena, if you chose to go back to the Lobby in the middle of a round, the invite button (and possible joining the lobby) will no longer work.
And what might not be a bug but really looks like one:
When creating a character you cannot customize the skills you start with, even though you can change what abilities you have, I haven't tested it but I would think if you pick a class then change the abilities to something different you can start with skills for which you do not have the requirements. EDIT: Just noticed NorD already reported this one, should have read before... But oh well I'll leave it in.
