When importing a skeletal mesh there is an issue where the normals of the face do not update with the faces of the inside of the book as it opens. This can cause a noticeable shadow issue, which could be more content related as well. However, looking at the normals in comparison to 3Ds Max and UE4, they are not updated, even using the Import Normals option.

I've attached the asset and FBX and Max File if needed.

Steps to Reproduce

1. Open UE4
2. Import Test Asset
3. Open Animation and enable Normals view

Results: Normals for the crease of the book do not update with the faces of the book.

Expected: I would expect there to be a normal for each face and update like in 3Ds Max when looking at the normals.

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By Design
ComponentUE - Rendering
Affects Versions4.104.114.12
Target Fix4.12
CreatedFeb 12, 2016
ResolvedMar 29, 2016
UpdatedMay 2, 2018