Jhin's reload animation bugging out while walking

Tested a lot of items and such in a custom game with Jhin. I was attacking scuttle and noticed during the reloading animation at a certain point in the game the animation would completely bug out and shutter step (sort of like the jitter animation when you get stuck on a minion) because he was walking to follow scuttle while reloading. It was 100% related to reloading and could be reproduced during that point of the game.

In testing though i sold/bought different items and leveled and it eventually stopped doing it. I returned back to some of the item builds i had when it was bugged and could not recreate it which leads to me think it has to do with a specific move speed or a specific level's flat attack speed.