Unreal Engine Issues

'Get Tangent at Distance Along Spline' returns incorrect values compared to 'Get Location and Tangent at Spline Point'

The "Get Tangent at Distance Along Spline" node returns incorrect tangent values compared to "Get Location and Tangent at Spline Point", where the spline point is at the same distance along the path ...

Interpolators of Particle Dynamic Parameters Need "nointerpolation".

Regardless Niagara or Cascade, dynamic parameters for particles are passed to pixel shaders from vertex shaders via InterpolantsVSToPS. It can cause a precision error on some materials, for example ...

RVT output from Landscape Height gets incorrect mip cache loaded

I test it for more information for your reference:It happens only when a Landscape *Height *was output to the RVT, other Landscape's maps like BaseColor are all fine, as well as Height output from o ...

GameplayTagQuery AutoDescription not refreshed after GameplayTag redirect on load

FGameplayTagQuery does not refresh its cached AutoDescription after GameplayTag redirects are applied during asset load. As a result, after renaming a GameplayTag and restarting the editor, the Game ...

Light as If Static setting does not Persist when Re-opening Project

This bug was originally entered back in 4.8 as [Link Removed], but was closed as by design. The reason was, the mesh did not have Lightmap UVs, so using the 'Light as If Static' option would not wor ...

[CrashReport] UE4Editor_Core!FFileHandleWindows::Seek() [windowsplatformfile.cpp:501]

This is common crash coming out of the 4.17 and 4.18 releases. The callstack is similar to an old unresolved import crash: [Link Removed] User Descriptionsrebuilding lightbuilding lighting from a d ...

Naming a category for a function the same name as a function can cause the My Blueprints tree to display incorrectly (making the category heading look like a function)

HLODs appear dark/near black when built for very large geometry with Virtual Textures enabled

Building HLODs for a very large landscape with Virtual Textures enabled results in the built HLODs being very dark for the most part. Building the same large landscape's HLODs with Virtual Textures ...

Missing PSO Precaches in the engine

A licensee wanted to report some missing PSO Precaching they found, which they have fixed locally: 1. UCableComponent doesn't implement CollectPSOPrecacheData or call CheckPSOPrecachingAndBoostPri ...

Crash When Loading Cooked Material Assets in Editor Due to Shader Serialization

In Unreal Engine 5.6+, the new shader serialization logic in FShaderMapResourceCode::Serialize does not correctly handle cooked assets that are loaded back into the editor (e.g., from a mounted .pak ...