Vertex Color not showing up in Cycles Render very strange problem:
A SpeedTree model comes with vertex colors for shading control.
These vertex colors show up in Shaded Mode / EEVEE Render, but disappear when switching to Cycles. They are neither rendered in color, nor are they being used in my shader which I made for color variation.
This is a consistent problem with 2.83 and 2.90.1.
Is this a bug or am I doing something wrong?



I also attached the file below, maybe something is off there?
https://filehorst.de/d/dlymjper
Update: This is due to the naming of the vertex color set. Naming it something else than &quot;color&quot; fixes the issue.