Atmosphere related scan line artifacts for Path Tracer with MGPU

UE - Graphics Features - Path Tracer - Feb 10, 2023

There are two UDNs related to this issue.  It makes the Path Tracer unusable with MGPU, with atmosphere enabled. I already have a one-line fix implemented and tested.  The atmosphere scan line arti ...

Possible: JPG encoding for Highscreenshot broken in 5.1 Linux build

UE - Platform - Linux - Feb 10, 2023

UDN report of JPG encoding not working: [Link Removed] Can we ask QA to try to repro? ...

Nvidia DLSS plugin causing crash in PIE

UE - Graphics Features - Feb 10, 2023

The editor is crashing with the 5.1 Nvidia DLSS plugin enabled after performing PIE. This issue is occurring in Binary //UE5/Release-5.1 at CL 23901901 This issue is NOT occurring in Binary //UE5/ ...

Stencil Test Post Process Breaks in Stereo Rendering

UE - Platform - XR - Feb 9, 2023

[Link Removed] post process material is blacking out our left eye A test project is provided. ...

Errors occur when moving duplicated Material Instances

UE - Rendering Architecture - Materials - Feb 9, 2023

Licensees have reported that two UMaterialInterfaceEditorOnlyData objects are being created for duplicated assets, causing a name conflict when renaming. ...

Editor Crashes when copy/pasting an emitter in the Niagara timeline

UE - Niagara - Feb 8, 2023

When creating the emitter's track widget we search for the stack view model's root entry, but the stack view model pointer is null, so we crash.  ...

Calling RemoveAllAnchors function on a non-clustered geometry collection falls extremely fast

UE - Simulation - Physics - Destruction - Feb 8, 2023

Non-clustered geometry collections applied RemoveAllAnchors are not put into FPBDRigidsSOAs::DynamicGeometryCollectionArray, so acceleration is not reset every tick and they fall super fast. The fol ...

Editable FBox properties are not saved

UE - CoreTech - Feb 7, 2023

FBox properties in the editor are not being saved.  This appears to be a regression caused by CL# 21566516 that was missed due to there being no editable box types in the Epic codebase. ...

LogUMG: Error: The requested size for SRetainerWidget is 0. W:739 H:0 when opening or updating a curve using the StackedCurve view

UE - Anim - Sequencer - Feb 6, 2023

The following error is generated in the Output log whenever a Wave Table is opened or any of the graphs are modified. It also occurs when adding an Input to a Sound Modulation Parameter patch or add ...