As you can see in the screenshot. The normals are fk’ed. The import setting are set to default in custom UE4.27. If I import mesh from blender, maya, different version or project of blender/maya I get this same result. If I export this same mesh as fbx from unreal and I reimport it back then I get this problem. If I import in a different new empty project of same engine, I get the same problem (I will write this sentence as “same P” now). If I export the fbx from different version of unreal and import it in custom version, same P. My colleagues sent me their fbx from their blender and unreal, same P. Importing in different version of unreal does not result in same probem. If I import whatever they way into standard UE4.27 then it imports correctly. If I send the same mesh to my colleagues then in their system it imports correctly both in standard and custom ue4.
So we basically narrowed down that it’s engine problem and specific to me only. How do I fix this?