If you deal too much damage to them while knocking them out and they turn into a ball, you can use a yutyrannus to fear roar them and they will run away, forgetting they’re supposed to stay in the ball, and you can continue knocking them out without the resistance.
I think they are broken rn. I was taming a 140 put 100 tranq arrows in it with a 218 damage crossbow. And it’s the second one in a row that did that to me. Like after they go into their shell and then come back out they don’t move. They are broken.