[CLIENT] Cannot disconnect from game servers--resulting in infinite game/unplayable client

I'm on the Mac client and just finished a game. The stats page wasn't loading, so I opted to skip it. Got taken to the home page, as expected, but could not create a new game as the client said I was apparently still playing a match. So I tried to reconnect to said match, but got stuck on a gray screen. Nothing loaded, I couldn't even tab out of my client, nor could I close it with COMMAND+Q. I attempted to restart my computer and client, not once, but twice, and both times I was greeted with the "Game Abandoned--Please Reconnect" screen. I can't leave this page, I can't do anything at all. All that happened starting about an hour ago. The friend I was playing with is not experiencing this problem (he is on a PC laptop).

Please fix this, it is ridiculous and frustrating that I can't even opt out of reconnecting, especially from a finished game.