When launched on a multi-monitor setup initially, all is fine. However when moved to my non-identical aspect ratio screen, the game fails to resize the UI properly (this is while finding a Pantheon game, haven't checked for other occurances) such that the Connection Info button is part cut off. When moved back to the original screen, this button goes back to the same relative position on the other screen, so for me, that means it levitates. It also seemed to interrupt my searching for a game, the dialog was empty, and it didn't find a match. The game also went to a black screen straight after I clicked cancel, and hung there.

I took this screenshot (it's an edit, not two instances of the game, just didn't feel like posting two pics) of the game on both screens.