Unreal Engine Issues

[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 ...

Get Velocity nodes with a specified bone return incorrect values

Please note that a similar issue exists [Link Removed], however it is not the same, as this issue requires a bone to be specified in the node to occur. Leaving the Bone Name field as None or Root pr ...

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 ...

Problem with material layers using interpolator nodes

The Vertex Interpolator Material Expression appears to collapse separate instances from separate Material Layers, leading to visual artifacts when used. Also tested on UE5_Main, CL: 34200103 ...

PostReplicatedChange called for fast array item even when no values change

Unless a property is set to REPNOTIFY_Always, we compare the property's received value to the current value on the client before calling the OnRep function. However, when determining if a fast array ...

Material doesn't apply with Linux packaged game

InlineEditConditionToggle behavior present for UProperties even when InlineEditConditionToggle property specifier is not used

Reported by customer: It seems like in some cases, even when the InlineEditConditionToggle property specifier is not used, the behavior it enables is turned on anyway. It's possible to disable it w ...