If a resource pack that changes mob models is installed (Mobs Refreshed for example), mob heads break because they use custom texture on vanilla model
There are 3 possible solutions I can suggest:
- Add support for custom models provided by CEM feature from EMF/OptiFine. I'm not sure how difficult it would be though.
- Ship custom head models and custom textures for those models inside the mod. This way resource packs won't affect models from the mod.
- Force models from the mod to use textures from Minecraft, if it's possible to do while a resource pack is overriding that texture
If a resource pack that changes mob models is installed (Mobs Refreshed for example), mob heads break because they use custom texture on vanilla model
There are 3 possible solutions I can suggest: