[Gameplay] Cass W is invisible

During the game I was lanning against a siren Cass. It was going fine until I would randomly be getting slowed and she would then spam her e on me till I died. Turns out in the death recap she placed her w but I and no one else on the team could see it. This gives a huge unfair advantage to Cass and is something that needs to be looked at. Every w she threw was invisible. I don't know if its just that skin or if its Cass but either way was very annoying.