While working on the upcoming Steam release, we discovered a bug where the existing Windows client would sometimes display pulldown menus in the wrong part of the screen. We just released version 1.1.1 to fix the issue, and you can get it from the Downloads
While we were at it, we also updated the interface for sending party invitations to make it easier to read on smaller devices. This change applies to all versions of the game, not just the desktop client. As always, let us know if you see any problems.