I am using the latest version of the mod (1.1.3) with Forge 41.1.0 for Minecraft 1.19. When wearing the helmet and boots, it seems like they do not properly render onto the body, while the leggings and chestplate do, unless you wear the full armor, in that case it breaks entirely. I have MoreMcmeta installed, the latest version.

i had (and still have) the same problem, i solved it but i do not remember what i did...

Well, you may want to load a texture pack and unload one, cause usually that's the solution for me.

i dont have any texture nor resource pack

I know this problem, sometimes texture packs can mess up the Textures for the armor.

tried it, nothing changed