Observed behaviour

I've seen others use Iron's Spells 'n Spellbooks mode while using the shader but when I did it, it changed like this

Expected behaviour

I expected the shader to be applied without breaking the texture

Steps to reproduce

I using forge-1.20.1-47.2.0-installer.jar and preview_OptiFine_1.20.1_HD_U_I6_pre5.jar or pre6.jar
If left OptiFine, texture returns to normal

Server Type

Single Player

Crashlog

No response

Iron's Spells N Spellbooks version

1.20.1 - 2.0.2, 1.20.1 - 2.1.2

Forge version

1.20.1- 47.2.0

Other mods

this is an optifine issue not irons spells. remove optifine and use oculus

Q: My Models are are broken/won’t render
A: If you have Optifine, it’s that. Optifine is meant for vanilla clients. Use the many alternatives (such as Oculus) that work with forge