When importing this .stp file through Datasmith, the normals are inverted upon import. Attached are screenshots of the normals in AutoDesk Alias and McNeel Rhino.
This was reported and tested in 4.24.1 (CL-10757647). This was reproduced in 4.23.1 (CL-9631420) and Main 4.25 (CL-10985206).
Results: Normals are inverted compared to CAD
Expected: Surface orientation should be the same as in CAD.
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-86863 in the post.