Landscape Distance Fields artifacts when using DX12

UE - Graphics Features - Apr 13, 2021

This problem was reported in this UDN:https://udn.unrealengine.com/s/question/0D52L00005PbEYNSA3/landscape-distance-fields-artifacts?fromCase=1 ...

Crash when copying and making a button widget the root of a second widget blueprint

UE - Editor - UI Systems - Apr 13, 2021

Pasting a button element from one Widget Blueprint into a second Widget Blueprint that has had its root Canvas Panel deleted results in a crash. The crash only occurs when the Canvas Panel is delete ...

Is Playing can return false on Sequence's second playthrough

UE - Anim - Sequencer - Apr 12, 2021

Playing a sequence more than once will have an incorrect player status on the first frame.  ...

Collections in content browser can't display native classes on 4.26

UE - Editor - Content Pipeline - Content Browser - Apr 12, 2021

The filter in UContentBrowserClassDataSource::CompileFilter does not work because the enumerated class objects are FName without path, while the filter item is name with path. [Image Removed] ...

Vcam - Objects Jittering with Vcam's Follow Cam modifier

UE - Virtual Production - Tools - Virtual Camera - Apr 8, 2021

Editor crashes when using decal material on Instanced Static Mesh with Raytracing

UE - Graphics Features - Lumen - Apr 8, 2021

This issue can occur when setting the Decal Material to Instanced Static Mesh in a Raytracing enabled project. (If there is a cache, it will not crash.) The cause is that DefaultDeferredDecalMateria ...

Strange performance when adjusting r.ScreenPercentage

UE - Graphics Features - Apr 6, 2021

A UDN user has reported strange performance characteristics with occlusion queries / lights when using screen percentage. It appears using a higher screen percentage is faster; the user attached a s ...

SweepComponent fails against non-root bodies of skeletal mesh component in PhysX

UE - Simulation - Physics - Apr 6, 2021

UDN - https://udn.unrealengine.com/s/question/0D52L00005H9X5XSAV/sweepcomponent-never-returns-a-valid-hit-against-skeletal-meshes-when-using-physx?fromCase=1 ...

Incorrect AO rendering when that using SSGI.HalfRes

UE - Graphics Features - Apr 6, 2021

This problem seems to have started from 4.26. Also, setting r.DiffuseIndirect.Denoiser=0 will increase the noise but invisible the rendering in problem. ...