Maybe a wrong material settup in Kerkythea (Answer: No, bad topology)

[micheus]

I'm going to upload the file tomorrow. (I'm on my smartphone now)

olve11, I used PNG with transparency, but I tried also opaque with clip mask getting the same result.

The leaves have top and bottom faces, but its boundaries share one edge - so, no thickness in that area.

The overlapping issue was almost predictable. It's an usual issue, but as it didn't appeared in photonmap I hoped it would be well managed by Kerkytea. I really need to add some thickness.

It was another test looking for the minimum polygons to represent that plant. It seems I used less than enough.