vrayMeshMtl does not accept vrayMaterialBuilder

[docaml]

Maybe it is the way it works, but, seems that vrayMeshMaterial accepts only direct brdf outputs. When vrayMaterialBuilder is connected to any material slot, it is rendered gray.It would not be the problem, but if you want a displacement on some mesh in proxy, then there is a problem.
So, is it a bug or it is the way that material works?
Best,
Doca

[bdancer]

1, It's definitely a bug.
2. I'm not sure it's possible to do per-material displacement for proxy.