Cross does not respond or crashes when "collide with attached children" is enabled

UE - Simulation - Visual - Apr 13, 2021

Fatal error! Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000 0x00007ffb09d32bb9 UE4Editor-Engine.dll!USkeletalMeshComponent::CopyClothCollisionsToChildren() [D:\ ...

There is a moment of T pause when Post Roll Frames is enabled and snapping is enabled

UE - Anim - Sequencer - Apr 19, 2021

When I turn off snap, the problem does not occur The problem does not occur in 4.24.3 and 4.25.4 Occurs in 4.26.2 and UE4main ...

Material cannot be set in MaterialInterface of NiagaraParameterCollection

UE - Niagara - Apr 16, 2021

When MaterialInterface is added to UserParameter of NiagaraSystem, Material can be set in Properties. Also, in UE4main CL15988344, there is no MaterialInterface item in the NiagaraParameterCollecti ...

EyeAdaptation node is not working in Decal

UE - Graphics Features - May 25, 2021

It is working correctly in 4.25.4. In 4.26.2, it is not working. It is also not working in UE4main 16382403. ...

Light Types Show Flags in SceneCaptureComponent2D is not functioning properly

UE - Virtual Production - May 30, 2021

It was working until 4.25.4. It is easy to see if you turn on/off the Light Types Show Flags in SceneCaptureComponent2D. ...

When Niagara is set to DesiredAge in Sequencer, the processing load increases after play

UE - Niagara - Cinematics - Jun 3, 2021

This does not happen in 4.25.4. It has been confirmed to occur with 4.26.2 and UE4main. After playback is complete, a large amount of stalls can be seen in Insight. ...

Color space transform in the UI composition is incorrect on DX12 HDR (r.HDR.UI.CompositeMode=1)

UE - Graphics Features - Jun 11, 2021

Color space conversion in the UI composition is incorrect on DX12 HDR. In the main() function In CompositeUIPixelShader.usf, you can see the following color space transform.// sRGB -> RRT -> ODT ...

Crash when capturing attribute spreadsheet of Niagara GPU Particle with raytracing enabled

UE - Niagara - Jul 8, 2021

Also, NiagaraDebugger crashes the moment I enable GPU Particle Readback. ...

If you add "All Nearby Spawned Actors" later, the first shot's animation will not be recorded.

UE - Anim - Sequencer - Jul 21, 2021

If you replace steps 2 and 3 and add "All Nearby Spawned Actors" first, and then add the Source of "Level Sequence", the animation of the first shot will also be recorded. ...

Animations are not recorded correctly when "Save Record Assets" is enabled.

UE - Anim - Sequencer - Jul 21, 2021

If I disable "Save Record Assets", all animations are recorded. I have checked the implementation of bSaveRecordedAssets, but I am not sure if this is the intended implementation. ...