Unreal Engine Issues

Inconsistent behavior with data layers and attached actors

OFPA: Cooking fails with nested actors

Custom HLSL's IncludeFilePaths should be injected into MaterialTemplate.ush

udn: [Link Removed] This appears to only be an issue with SN_DBS. DBS calls a function to gather all shader includes, and any custom hlsl includes aren't discovered causing that file to not be cop ...

[AI] AgentToNavDataMap still contains entries when cleaning up navigation system

The navigation system has errors in the log for agents still being mapped to navigation data in CleanUp. This appears to stem from agent step height being recalculated in ARecastNavMesh::SetConfig i ...

Sync Marker validation check fails on Follower anim sequence with an active Mirror Table when Leader anim sequence is playing backwards

Validation fail ...

[VariantManager] Over exposure when using image from file as thumbnail

This is a sRGB color space issue. Potential solution: Use regular texture import instead of FImageUtils::ImportFileAsTexture2D in ThumbnailGenerator::GenerateThumbnailFromFile ...

SharedStructMemory's custom deleter doesn't call ~SharedStructMemory and may result in a memory leak

FSharedStructMemory uses a custom deleter that calls FMemory::Free, but it doesn't call the destructor. FSharedStructMemory's destructor is responsible for correctly destructing the internal ScriptS ...

Draw Invalidating Bounds debug view mode for Virtual Shadow Maps is gone in 5.4

The CVar "r.Shadow.Virtual.Cache.DrawInvalidatingBounds" referenced in the official 5.4 documentation for virtual shadow maps, no longer shows any bounds as the underlying code seem to be removed in ...

Static/Skinned Mesh SPropertyEditorAsset widget performance regression

Can't set "r.Shaders.Optimize" to false in UE5.4

The CVar "r.Shaders.Optimize" cannot be set to false from DefaultEngine.ini in the section "[ShaderCompiler]" as its help text describes. Also tested on UE5-Main, CL: 34200103 ...