Animals freezing in place

I'm not too sure why this happened but suddenly most if not all of the animals suddenly froze and are difficult to interact with, like their hitboxes aren't working right. I tried punching one to see if it would unfreeze but no dice. Reloading the world made them unstuck but this happened twice in about an hour. There was a drowned that attacked me while they were frozen, so I think it only affects passive mobs.