Mobs AI stops working

I recently started a Single Player server and noticed that sometimes mobs stop moving and their mechanics do not work properly.

This is noticed on:

1) Villagers! If their workstation is broken while they sleep then when they wake up (some of them) freeze and do not reclaim the newly placed workstation. They were standing on the same spot and was only able to turn around themselves withought moving). A similar issue also occured with beds. During a night a baby Villager couldnt claim properly a bed to sleep on and was moving around it with constantly green particles (claim particles) comming out of him. When I broke the bed and recplaced it he then claimed it properly and slept.

2) Horses! I moved some untamed Horses in the nether. When I tried to tame them they do nothing. They never threw me out of their back but dont get friendly either. I afk'd on top of a Horse for testing and when I came back 1 hour later I was still on it and it still wasn't tamed. The Hose couldn't move though (much like the Villagers). It can only turn around itself on the same spot.

3) Raid mobs! During a Raid most of the Pillagers/Ravegers were frozen and I could kill them easily. I was hitting them and they didn't fight back. Some of them unfroze when I first hit them for some reason.