Description

Licensee has provided a BP workaround

Steps to Reproduce

Download the licensee repro here - 

[Link Removed]

View the three materials in the content browser. From the licensee:

__M_RefractionNoMaterialFunction__

_This is just a basic translucent material working as expected.
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__M_RefractionWithMaterialFunction_BrokenRefraction__

_Same material as above but MF_EmptyFunction is added which is just an empty material function which passes through the material attributes.
 ___ 

__M_RefractionWithMaterialFunction_HackFix__

Again same as previous material but with a "fix" to reset the refraction value after the material function.

 ____ 

The Minimal_Default map has three spheres added. I would expect refraction to work correctly on all of them but the sphere in the center is missing refraction completely.

Have Comments or More Details?

There's no existing public thread on this issue, so head over to AnswerHub just mention UE-121355 in the post.

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Unresolved
ComponentUE - Rendering
Affects Versions4.26.24.27
Target Fix5.0
CreatedAug 10, 2021
UpdatedOct 21, 2021