Dolphin animation stops playing if NoAI:1b

Dolphin animation stops playing after some time if dolphin has disabled AI, however, the animation restarts for all if one ise touched by other mob / hurt by other mob, but then only tail moves

 

Unable to add video to report, so I've added this to google drive https://drive.google.com/drive/folders/1-1QDaW6djCawwEuab9iUvi-nk7kC6fSo?usp=sharing