Not sure if this is a known bug on 4.26, but I am getting this overdraw issue with groom and translucent actors.
Here I am placed a simple translucent material in front the hair, but groom doesn’t know how to cull it (I am using the default hair shader).
This gets especially weird when adding translucent materials on your character, like eyes.
Anyone encounter this, know what is going on, or how to fix it?
EDITED: Looks like its more of a groom problem and less of a material shader problem. I applied the same material to another object and didn’t get any translucency issues. Second picture shows the material applied to the default cube with no issues.