The editor view will get much darker.
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The UWorld.RecreateScene was called and all the FRenderResource were recreated, but the FLightmapResourceCluster were not updated after that.
I think it should not recreate the FRenderResource which were already initialized with the same FeatureLevel.
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-79367 in the post.