Unreal Engine Issues

I get a compile error when using Particle SubUV nodes and tessellation.

I think tessellation will be discontinued in the future, but I will report it just in case. The licensee is not keen on fixing this problem. ...

Compilation error when using Particle SubUV in Niagara Mesh Particles with Raytracing enabled.

The licensee has shared the following workaround for modifying NiagaraMeshVertexFactory.ush. struct FVertexFactoryInterpolantsVSToPS { TANGENTTOWORLD_INTERPOLATOR_BLOCK #if USE_PARTICLE_SUBU ...

PostProcess AnimBP of Skeletal Mesh set to Additional Meshs in AnimMontage is not evaluated

This issue does not evaluate PostProcessAnimBP for skeletal meshes set to additional meshes in AnimMontage[Image Removed] If I opened PostAnimBP directly and compiled it, it also played on AnimMont ...

Sequencer crashes when using Transform variable added to Scene component BP

This issue has not occurred in previous versions and seems to occur from 4.27. ...

Crash when using AnimBudgetAllocator

In the AnimNode_Slot code, It seems that update() and evaluate() should be called by following order because in TickAnimation step, we need to make MontageEvaluateData valid.SkeletalMeshComponent::U ...

Crash when reimporting SkeletalMesh with custom LOD

In the case of "Reimport Base Mesh + LODs", there is no crash. ...

Material does not render correctly when launched with Cook on the fly

This issue seems to occur when using Cook on the fly on a Material that is branched on the Static switch. This issue also seems to occur on the console. Regression = Yes, issue is not reproduced // ...

GPU Particle may blink when rendered in scene capture.

When playing Montage, the loop setting may slip through in rare cases.

Incorrect number of vertices displayed by ProfileGPU command in Cascade particles

This issue was reported by the licensee, but it's possible that the number of vertices in the particles is higher than it really is. ...