I have noticed some strange behavior with render elements and corona in Max. I have renders that contain no refraction, yet I am getting things showing up in the refraction pass that should just be black.
Not sure when I started noticing this. But I have been getting things showing up in Render Elements that should not be there.
Notes:
- No refraction in any materials.
- Refraction pass has strange things in the pass. Like blurry splotches, and other things that show up.
- It does not always show the same strange things in the render.