On certain assets, specular element is showing lines on an asset.

[Image Removed]

I have attached a Maya and FBX file of an asset which demonstrates this issue.

Steps to Reproduce
  1. Open a Blank Project with No Starter Content
  2. Import the Test_VertexOrder.fbx
  3. Create a New Two Sided Opaque Material with No Base Color and a Metallic and Roughness setting on 0.
  4. Assign the material to the Imported Plane
  5. Place Plane in Level at an angle to the light source, in order to have an easy view of the specular highlight

RESULTS: Specular Highlights is showing lines as it moves across the asset

EXPECTED: No lines should be visible in the Specular Highlight.

*Quick Repro: Open attached SpecularHighlightsIssue Project*

Community References

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Won't Fix
ComponentUE - Graphics Features
Affects Versions4.9.1
CreatedSep 21, 2015
ResolvedAug 18, 2021
UpdatedAug 18, 2021
View Jira Issue