Unreal Engine Issues
Unreal Engine Issues
Farfield shadow in lumen scene
UE - Rendering - Graphics Features - Jul 21, 2025Shadows in the Lumen Scene from Lumen's Direct Lighting do not match the world when in the Lumen Far Field. This leads to shadows where there should not be any, and missing shadows where there shou ...
Natively declared Gameplay Tags aren't counted by Reference Viewer when set default by ctor
UE - Gameplay - Jul 11, 2024Similar to Issue 199247 ([Link Removed]), Natively declared Gameplay Tags aren't counted by Reference Viewer when used in a variable set in a C++ ctor. ...
A sampling result of DistanceFieldAOHistory is shifted to a wrong position.
UE - Rendering - Graphics Features - Aug 21, 2024DistanceFieldAOHistory introduces ghosting at low scalability and low screen percentages. This can lead to AO artifacts and a ghosting effect from the character. This issue was also observed on //U ...
Physics Asset primitives are being created with the default Name as None instead of BoneName_PrimitiveType
UE - Editor - Content Pipeline - FBX - Oct 27, 2024When creating Physics Assets, either by automatic creation upon import, creation from skeletal meshes already in the project, or when we press Generate All Bodies (bottom right of a opened Physics A ...
Linear interpolation occurs on constant tangent curve partially
UE - Runtime - Animation - Feb 17, 2025When using UV scrolling for a flipbook-like animation in Animation Sequence, creating keys with "Constant Tangent" settings on Curve Editor does not result in an instantaneous change to the specifie ...
AnimToTexture vertex animation stutters on looping frame
UE - Characters - Animation - Aug 8, 2025The AnimToTexture plugin generates an animated texture that results in a stutter when the animation loops. This looks to be related to the code in UAnimToTextureBPLibrary::AnimationToTexture which ...
Modifying FSuggestProjectileVelocityParameters::ResponseParam.CollisionResponse modifies FCollisionResponseParams::DefaultResponseParam
UE - Runtime - Simulation - Sep 17, 2024FSuggestProjectileVelocityParameters was introduced in 5.4 and has a FCollisionResponseParams member that's initialized as a mutable reference to FCollisionResponseParams::DefaultResponseParam. str ...
Local Exposure can cause large variations in PreExposure under certain conditions
UE - Rendering - Graphics Features - Sep 16, 2025PreExposure is influenced by LocalExposure in PostProcessEyeAdaptation.cpp:1265. It appears when the scene is particularly dark and using manual exposure, the LastAverageLocalExposure can read a lar ...
Chaos Vehicle does not make them CCD
UE - Runtime - Simulation - Jan 10, 2024AWheeledVehiclePawn class tries to use CCD in the constructor, but Mesh->BodyInstance.bUseCCD = true this code does not work to activate CCD because Physics Assets could not be available at this ...
Initialize_AnyThread and CacheBones_AnyThread can be called multiple times on Saved Pose nodes in linked anim graphs
UE - Runtime - Animation - Jun 13, 2025Initialize_AnyThread and CacheBones_AnyThread can be called repeatedly on sub-graphs below Saved Pose nodes when they are part of a linked anim graph and the main anim graph has yet to be initialize ...