Q: v2017 - changes to fbx output?

See pic - I just noticed some strange artifacts in UnrealEngine. Could be a convertor issue but I’m curious if any changes were made to exported fbx files in V2017 ?

For now I found this:
Seems like there are fbx versions… V2016 used 7300, v2017 uses 7500 (cant find anything what that really means though).

Using Fbxconverter to convert the fbx from asc to binary.
Next; importing the binary fbx file into Blender works fine again if you disable to import the normals from the fbx-file.

Strange though because in v2016 this all worked nicely.