[GAMEPLAY] Abilities Are Unresponsive

Champion abilities have been unresponsive for at least the past week. This happens for all champions I play (mostly Ahri, Katarina, Orianna, Ryze, etc.). It usually happens when using multiple spells in a short amount of time. One of the spells (often the ultimate) will get "stuck", and you get the same rejection noise that you get when a spell is on cooldown. I've seen people on the boards complain about this issue with Katarina, but it is happening with all champions. It is wildly frustrating and needs to be fixed immediately.

P.S. This has nothing to do with cast times. The spell actually gets "locked" and you cannot cast it for several seconds.