Lissandra Self-Cast bug

main here, gold player, playing since season 3.

So you know the Self-cast button you can use? Well I've had that mapped onto my mouse for over a year now, using it without a single problem. Just played a game where I was hovering my mouse over an enemy champ (to cast my q spell..) and when I self-cast ultimate, it went onto the enemy graves.

;]

Literally my face and lost us the game