Anisotropic issue

[christophdoe]

Hey, I can't figure out, what I'm doing wrong here.

I want to have so anisotropic reflection at the top of my knobs and get those disc shape at the center of my knobs. Any ideas?

[christophdoe]

Ok I found a solution myself, but may be useful for other too. I split the top disc shape and put it into a separate object.
It seems the fillet / bevel of the knob was the issue. Seems like a bug for me.