Unreal Engine Issues
Unreal Engine Issues
Stateless Connect Handler's SessionId and ClientId checks not working with SteamSockets
UE - Online - Feb 14, 2023We've had a couple of reports of the recently added session/client id checks in the StatelessConnectHandlerComponent failing when using SteamSockets. The connections fail with the "Rejecting handsha ...
GameThread + AsyncLoadingThread deadlock - StaticLoadObject vs. StaticAllocateObject
UE - Foundation - Core - UObject - Feb 14, 2023User reported encountering a deadlock between GameThread and AsyncLoadingThread and provided two callstacks.User quote I've been running into a deadlock intermittently with a custom blueprint conso ...
AnimDrawDebug does not work if using RootMotion from Everything
UE - Anim - Gameplay - Feb 14, 2023Debug drawing with AnimDarwDebug~ does not work when RootMotionMode is set to "RootMotion from Everything". In addition, the same issue occurs when MultiThread of Animation is turned off. Licensee ...
FMassArchetypeData::ExecutionFunctionForChunk crashes on binding shared fragments
UE - AI - Mass - Feb 14, 2023FMassArchetypeData::ExecutionFunctionForChunk is using wrong mappings while binding shared fragments. It's using RequirementMapping.ChunkFragments while it should use RequirementMapping.ConstSharedF ...
crash from a race condition between interchange worker dispatcher and worker handler
UE - Editor - Content Pipeline - Import and Export - Feb 13, 2023Atmosphere related scan line artifacts for Path Tracer with MGPU
UE - Graphics Features - Path Tracer - Feb 10, 2023There 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 ...
Alpha blending is done twice when using RenderOpacity of RetainerBox's parent slot
UE - Editor - UI Systems - UMG - Feb 10, 2023Licensee reported that alpha blending is done twice in the code below, and the fix below seems to fix it. .\Engine\Source\Runtime\UMG\Private\Slate\SRetainerWidget.cpp From:const FLinearColor Compu ...
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, 2023Licensees 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, 2023When 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. ...