seems to be related to this issue:
any suggestions to fix it?
thank you
(im also curious why it doesnt happen with a basic cube, but yes with a more complex model)
"The smart_project in Blender 2.83 has the parameter named as user_area_weight.
The parameter has been switched to area_weight in smart_project in Blender 2.91
I think the renaming is causing this issue. Reporting it here so that it can be looked into while porting the exporter for Blender 2.9x"