[Visual Bug] Battlecast Vel'Koz (And possibly his other skins)

Update 5.23

His animations are a complete mess: His auto-attacks' animations are not working for the most part, from my observations, his middle and left tentacles' animations do not work, his model freezing and not moving, whilst only his right tentacle works fine. I do not know for his crit animation. Also about half of the time his movement animations are not working either, his model remaining frozen as well. I have experienced these issues with his Battlecast skin and do not know if it affects his other skins, I will test his normal skin.

Edit: I have tested it with his Classic skin as well and the same issues occur, my guess would be Arclight does it as well, but since I do not own it yet, I could not verify.

Also, my allies and opponents alike can also see said bugs occurring, so it is not my computer that causes the issue.

Another visual bug we have witnessed occurs after certain auto-attack/abilitie combos where instead of freezing in place his model take a "3-cornered-star" shape and stay frozen like that until another auto-attack or ability is used. (It's fairly hilarious, but I have yet to find the exact sequence of attacks to make it occur)

Here's a small video I made of one of the said model freezes (the 3-cornered-star one): https://www.youtube.com/watch?v=mzC4mN-16Kc