sylus can use teemo's mushroom infinitely

since sylus became 16lvl he copied my teemo's ult and he fkn used it infinitely without cooldown. this is fkn massive bug. riot u should give my point back. i couldve won the game easily but this bug ruined my game. he just literally put like 300 mushrooms. how come u guys r able to let him do that.. this is crazy bug. give my point back and give me a teemo skin thank u