Some servers use Itemadder plugin to add custom content to the game.It needs player to download appropriative resourcepacks.
The skulls render wrongly if you use 3d-skin-layers with those resourcepacks on Forge 1.19.2.
This problem don't exist on Fabric version
Mod version:3dskinlayers-forge-1.5.2-mc1.19.1
Example(resourcepack).zip

Resourcepack on:

Resourcepack off:

Uhhhh if that's Forge only, that is not a can of worms I want to open right now. Forge and Fabric use 1:1 the same code, so it being broken on Forge means somewhere in Forge they break it. Also when these are placed heads, the resource pack should not be able to affect them at all?

Uhhhh if that's Forge only, that is not a can of worms I want to open right now. Forge and Fabric use 1:1 the same code, so it being broken on Forge means somewhere in Forge they break it. Also when these are placed heads, the resource pack should not be able to affect them at all?

This resource pack shouldn't affect them.The skulls are broken even though I removed all contents.Maybe Forge broke it but the texture is normal while Forge used without this mod.