GeckoLib Animation not working properly with multiple enities

Hello there,

I'm making an animated entity using GeckoLib, and everything works just fine until I spawn in another entity of the same kind. Then only one of these enities uses the walk animation, the other one doesn't. Is this a bug, is my game not rendering it correctly or did I do something wrong? And is there any way I can fix that? I couldn't find any useful information regarding that problem in the forum or Youtube either. 

Any help would be appreciated, thanks