I narrowed down the issue to the Main call of ShadowProjectionPixelShader, and tested (on 4.26 and 4.27) a combo of different material and light shadow settings, as well as enabling transmission on the light for the the SUBPIXEL_SHADOW enabled shaders, but couldn't get to the bottom of it.

Steps to Reproduce

Download the licensee repro here - [Link Removed]

The issue is immediately apparent.

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ComponentUE - Graphics Features
Affects Versions4.26.24.27
Target Fix5.0
Fix Commit1770557
CreatedAug 17, 2021
ResolvedOct 4, 2021
UpdatedOct 6, 2021
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