This looks to be an issue with shadows in Lumen Direct Lighting, and might be coming from the "Batched lights" pass.
1. Download the attached test project and open.
2. Enable the Lumen Scene View visualizer
3. Observe the harsh cutoff on the spotlight with shadows
4. Toggle "Cast Shadow" on the spotlight. Observe the harsh cutoff disappears when "Cast Shadow" is disabled.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-201687 in the post.
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Component | UE - Rendering Architecture |
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Affects Versions | 5.3 |
Created | Dec 1, 2023 |
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Updated | Nov 4, 2024 |