Kayn Q bug

It seems like the exiting of a wall / e-form messes up with animations. In all cases, it can be reproduced if you exit a wall and auto->Q. This results in Q animation starting, not finishing, not doing damage and also going on cooldown. I think it could be to do with this: an auto doesn't take you straight out of E-form but does put you in combat for the reduced timer. Then the timer "expires" in your Q animation if you do this auto->Q and this somehow ends your Q prematurely.

Thanks to 0samoht for discovering this bug and letting me post it here.