Hi Andre, which version of MoI are you using? it seems to be working ok for me over here using the current v4 beta. V3 is behaving like you describe.

I think the problem is in this area here though, it's subtle but notice how that edge is slightly darker than the others? That's because there is more than one edge there because there is a very skinny surface fragment there. V4 seems to be doing a better job than V3 at handling that:





- Michael