Just checked on 2014 - same here, fucked up normals. It is even visible in viewport. Adding cap holes modifier before shell fixes it. So I guess it might have something to do with teapot having both solid (capped) and non-solid parts, intersecting each other, etc. But I guess it is not Corona related. It happens in scanline too.
Can't access max15/16 now, would be cool if someone could check it.