[GAMEPLAY] Invisible Rumble Ult

I just played a game with an akali and rumble. The akali was on our team and rumble was on the enemy team. Whenever akali used w then rumble ulted the rumble ult was invisible. This bug caused us caused us to die from rumble ult twice since we couldn't see the ult and we walked all over it. This is a very game breaking bug if rumble and akali are in the same game, as the enemy team can potentially die form an invisible rumble ult without knowing it.