Hi! I recently suffered a crash (yay), and set up my server anew. I had backup of the map, but had to set everything else up. Everything is now running, but I have one problem. If I start the game with my old (backed_up) map, mobs won't move. They move, if I walk onto their block, or sometimes if I hurt them. Otherwise, they are completely stuck. So stuck, I can remove ground underneath them, and they hang mid-air. I have tried starting everything fresh, even without plugins, and this still happens. If I start with a new map, however .. things work fine. Does anyone have a ny idea what could be causing this? Video: Here you can see it happening to the dragon. I tried showing with other mobs too, but of course that didn't happen now. It does, though, randomly happen with all mobs.