Velvet Material with Fresnel, Falloff Problem

[creo3d]

Hi Guys, for some time I have a problem that when I create fabric velvet/velour on nodes while adding fresnel or falloff without ticked bump after turning on Cinema 4d again I always have a problem in loading fabric during rendering, it's always black, I have to click adding bump in fresnel or falloff to load the material. It's annoying and time-consuming, is there any solution to this problem?
Thanks!

[Beanzvision]

It sounds like a shared shader issue. Try to avoid using the shared shader to see if that solves it. There are some issues with it at the moment that we are addressing.