Placeholder Texture Appears in some modded slabs

[JasdanVM]

Many Slabs from mods have the missing texture problem, to recreate this issue is just a matter of installing different mods that add slabs. So far I've seen this in Chipped, Immersive Weathering, and the slabs generated by Every Compat. I haven't texted every mod I have, but the issue is likely to appear in others, please look into this.