Operating system: Windows 10
Broken: 2.8 latest master
Short description of error
In many (majority) of cases, Blender's .abc exporter doesn't properly export smoothing groups.
This is the exported model:
The exporter settings are explicitly configured to export all the face shading properties and normals:
The same model reimported into same version of blender using the same .abc file that was exported:
Exact steps for others to reproduce the error
1, Open the file:
2, Export it as .abc format. Make sure to enable all the options related to normal export
3, Import the exported file back to blender.
Face normals are gone
Face normals are preserved
UPDATE: It appears that GLTF format has the same problem.