[GAMEPLAY] Vel'koz battlecast skin bug

while playing the game the battlecast Vel'koz skin animation seems to freeze. while attacking a minion he will remain still but continue to hit the minion with an invisible tentacle. this has also been affecting his ult. As when I have used his ult the beam he fires will be invisible as well making it difficult to aim. further more sometimes he will be stuck in pose randomly but still able to move down lane but stuck in pose for example he may have all he's tentacle extended away from his centre.