Very same file, same settings, same material.
The only difference is the “Skeletal Mesh” checkbox.
This is what I get with skeletal mesh import disabled:
This is what I get with skeletal mesh import enabled:
What the WTF is going on?
I’ve tried every possible piece of software and export option, nothing makes any difference.
UE4 just ignores any and all face normals when importing a skeletal mesh.
Yet all the normals are in there and they are clearly fine, it’s the very same file.
Even tried importing the mesh to mixamo and exporting it from there.
And not only this mesh, but also other meshes.
Makes no difference.