Posting this as a bug report since it seems everyone left for the holidays immediately after the announcement.
I’m working on a bundle right now that I intend to do manual rigging for, but I threw it into the avatar auto setup tool to see how it would do. I was impressed it seemed to detect the lower jaw correctly, but there were other issues that made the result unusable.
I use sharp edges as part of my art style, but it looks like for some reason these edges are getting mangled in output, and are treated like I used the edge split modifier rather than only a trick with surface normal direction. You can see everywhere there is a sharp edge, the geometry separates. I’ve never had this issue anywhere else on Roblox, so I presume the auto-setup is doing something strange with this.
This happens mostly for the head on what looks like all hard edges.
To mark a hard edge, I right click and shade smooth the model in blender, and then in edit mode I “mark hard edge”. There is no edge split modifier. I exported the unrigged mesh with default settings except for scale.
I can provide a repro later.