Alpha has errors

Hey,
I have a solid object here, which has no transparency or refraction in the shader whatsoever. And yet, the alpha is rendering wrong. In some parts of the object the alpha is getting grey, please see attached screenshot. It is quite hard to see. Any ideas what might be causing this? RT CPU and ADV are rendering fine.

Without a scene with repro case it will be pretty much repro case. It will be really helfpul if you can send such to support@chaosgroup.com with link to this thread.

Thanks,
Best,
Blago.

Will put together a scene file showing the problem. Thanks.

eMail with stripped scene file was sent to you, Blago. Thanks!