Mihai Erős

Are you referring to these? GLTFShaderModifierSurface_pbrSpecularGlossiness_doubleSidedWorkaround.shader GLTFShaderModifierSurface_pbrSpecularGlossiness_texture_doubleSidedWorkaround.shader GLTFShaderModifierSurface_pbrSpecularGlossiness.shader And: GLTFShaderModifierSurface.shader GLTFShaderModifierSurface_alphaModeBlend.shader GLTFShaderModifierSurface_doubleSidedWorkaround.shader GLTFShaderModifierFragment_alphaCutoff.shader Because I changed the target membership on them and it still doesn't work...

It actually works with iOS 12, still no success on macOS Mojave 10.14.12.