I’m trying to figure out why vertex painting isn’t working on my Quixel mesh. The big white/red floor underneath this wicker basket is a simple static mesh created inside UE5 with a handful of polygons (~50). It has the exact same material applied to it as the basket. That material is very simple - two colors blended by a lerp, controlled by a vertex color input. The floor paints fine, but the basket ignores the paintbrush (the brush UI is there and looks normal, the colors just don’t change as they should). I created a wooden pillar in blender that I’ve also tested this on, and the pillar isn’t painting either. I’m trying to figure out what step I missed, such that unreal-created geometry paints fine but imported geometry doesn’t. I’m using weight painting, default paint settings.
Update: Just tried importing the same mesh from Blender into Unreal 4.27 and Unreal 5 - it worked fine in 4.27 but not in 5. Maybe this is broken in UE5?