[BUG] Cassiopeia Super OP?

So i faced a Cassiopeia last game, and we all know how, if you get poisoned by her, she can start bursting you down. The easiest way to prevent this is to just walk around her Q & W. Well the problem is that now her W is invisible. She throws it on the ground, you see her throwing it, but you don't see it appearing. If you walk through it, you do get poisoned. AKA, super OP!

I'm just kidding, not OP, just broken. Has anybody else noticed this? I'd love to know if it was just a visual effect that didn't load or if this is legit. Last case scenario, i can't wait to get it fixed :P

let me know if you've seen this too and of you had found a solution for it.

Cheers, have a great day y'all