Velkoz Auto attack animation freezing [GAMEPLAY]

I was playing a game as vel'koz and upon autoattacking, my character model would often freeze, either mid animation, or with all tentacles pointed directly outwards. The autoattack would show, but vel'koz would make no animation to show that it was happening.

I was not able to recreate the bug in a custom game, but the game it occurred in, my team consisted of darius, xin zhao, blitzcrank, and jinx. The enemy team was kindred, lee sin, ekko, illaoi, and ezreal. I was using battlecast velkoz.