Axolotls stop moving

Everybody Gangsta Til' The Axolotls FREEZE and stay there. They don't even move they only move after some minutes or hours and they get stuck again. Their "Looking" System still works. Is there anything wrong with the AI? I used the command "/summon axolotl ~~~ minecraft:entity_born
Here is video link since it > 10 MB: https://www.mediafire.com/file/czgd4qz1km6jz22/IMG_1691.MOV/file