Unreal Engine Issues
Unreal Engine Issues
Moving noise is visible in hair shadows when Lumen screen traces are active
UE - Graphics Features - Apr 18, 2024Dark moving noise is visible in hair in the shadows when Lumen screen traces are active. Example of noise when screen tracing is frozen:[Image Removed] Turning off Lumen screen traces using r.Lume ...
VSMs not rendering soft shadows on left eye in stereo rendering when more than one light is casting shadows
UE - Graphics Features - Mar 13, 2024Left eye shadow dithering stops working at a certain distance away from the light. To recreate this behavior with any project, follow those steps: Create an empty levelAdd a static mesh and a backd ...
[CrashReport][Assert] UnrealEditor-RHI!FRHIResource::MarkForDelete() [Engine/Source/Runtime/RHI/Private/RHIResources.cpp:49]
UE - Rendering Architecture - Materials - Dec 18, 2024One of the users described this issue as below. "At seemingly random times while working in the material graph, some action will cause a hitch or freeze, and quickly after the engine will crash, an ...
Crash When opening context menu in sequencer
UE - Anim - Sequencer - Mar 14, 2018Altering a key in an event track that contains a struck with a static mesh variable will cause the editor to crash. ...
Ensure When Setting Simulate Physics of a Child Actor on the Server and Forcing NetUpdate
UE - Networking - Jan 5, 2017An ensure is being triggered when you set simulate physics on a child actor on the server and then force net update. Found in 4.14.2 CL# 3241561. Reproduced in 4.16 Main CL#3247538 ...
Compile warning/error in the FUpdateCollisionResponseHelper destructor
UE - Simulation - Physics - Dec 15, 2017It has been reported that when building with Visual Studio 2017 version 15.5.1, a warning/compile error is shown in BodyInstanceCustomization.cpp: warning C4287: '<': unsigned/negative constant mism ...
Descriptions for vis log shapes in the Rewind Debugger are misaligned
UE - AI - Debugging - Mar 25, 2025When recording shape information, descriptions are offset from the shape. Licensee Message - I noticed that the capsule vis log description labels were not lining up after replaying the recording ...
GAS: Double attributes not shown GameplayDebugger
UE - Gameplay - Gameplay Ability System - Aug 27, 2025Context The Gameplay Ability System lets devs specify numerical attribute properties in UAttributeSet subclasses. Although the preferred attribute property type is FGameplayAttributeData, GAS has l ...
Crash when jumping to location of referenced missing asset in a blueprint from Message Log window
Tools - Aug 29, 2016I created a static mesh blueprint and set the mesh asset to a mesh in my project. Then I closed the project, deleted the mesh .uasset, reopened the project. When opening the blueprint, there are w ...
Undoing a change to the content of a Text widget while it is still selected causes an assert
UE - Editor - UI Systems - Jul 17, 2018Hitting undo on a text widget while it is still selected will cause an assert. This appears to happen because the widget loses focus and attempts to commit it's text while still processing the undo, ...