Might be a known thing. I was trying to give a comper a reflection matte for a few objects in the main render but it seems that it breaks the reflection element. It’s as if the data from the reflect occlusion gets overlaid on the reflection element as seen in the image below. The region render has the extratex turned off and it’s working fine, the main region has the extra tex on with the dirt using a small radius which doesn’t 100% cover the sphere.
Ah - I understand it as a handy selection / matte thing in an extratex but I don’t get why people would ever want it to also affect the reflection element!
