Glitches resulting in low priority queue, etc.

I was just in a ranked promo series champ select and was editing masteries as I was going through bans. I banned darius and went back to editing masteries, but the picture of darius popped up and covered the upper right corner of my screen. I could no longer exit out of masteries and it resulted in a "dodge," leading to a lost series game and a low priority queue. I know people say that you don't get pushed out for one game, BUT I AM CERTAIN I HAVE NOT DODGED OR AFK'D IN AT LEAST A COUPLE WEEKS and rarely ever do so (I think it was because it was promo).

This is messed up.