Okay, so I just tamed a cat. It teleported next to a villager's house to catch up to me. Then it just froze. It didn't want to move or teleport to me. It would still do its idle animation (just looking around motionless). But it can be simply fixed by just sitting your cat down and then making it stand up. I'm sure this can be recreated by letting the cat teleport to you. (For some reason I couldn't recreate it, but it did happen. I hope what I provided is enough proof, it did not want to follow or teleport to me until I sat it down then stood it back up again. Again, I hope this is enough proof, I hope it's far enough away. I wish I could've videoed it before I fixed it. I don't know what happened. I hope you can find it and fix it. It did, in fact, happen.