Subsurface shading model is broken when ray traced shadows are used in 5.1+

UE - Graphics Features - Ray Tracing - Apr 19, 2023

Crash when copying PF_Stencil format from the GPU to the CPU

UE - Rendering Architecture - RHI - Oct 18, 2023

This is a crash related to copying depth-stencil render targets to the CPU. See linked UDN for more info. ...

Cash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true

UE - Graphics Features - Path Tracer - May 16, 2025

Cash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true The licensee has reported: This crash happens because the DeferredShadingRenderer tries to extract the normal GBu ...

Crash in FUniformExpressionSet::FillUniformBuffer trying access deleted UTextureCollection

UE - Rendering Architecture - May 30, 2025

Crash in FUniformExpressionSet::FillUniformBuffer trying access deleted UTextureCollection (Experimental in 5.6). The licensee describes their crash, their analysis, and a proposed fix: This crash ...

DynamicEntryBox with EntryBoxType Radial is stacking Entries if SectorCentralAngle is multiple of 360.0f and DistributeItemsEvenly is enabled

UE - Editor - UI Systems - May 27, 2025

DynamicEntryBox with EntryBoxType Radial is stacking Entries if SectorCentralAngle is multiple of 360.0f and DistributeItemsEvenly is enabled. The licensee has provided an analysis: On void SRadia ...

Adding specific map to project crashes editor

UE - Gameplay - Dec 23, 2015

Adding map from user's project, CityofEther.umap, crashes editor upon launch or attempting to open the map. Crashreporter: [Link Removed] ...

Packaged Game crashes after user has upgraded to 4.7

UE - Foundation - Core - Mar 31, 2015

It only seems to be this user's game that crashes when he packages or does launch on windows I have reproduced this locally. I honestly don't know why this repro's, but I have an example project a ...

Project crashes when exiting mobile preview

UE - Gameplay - May 27, 2015

User project crashes when exiting from mobile preview. Frequency: 5/5 Crashreporter: [Link Removed] ...

Cannot import objects with Bezier Curve modifier from Blender

UE - Editor - Content Pipeline - Import and Export - Apr 13, 2015

Objects with a bezier curve modifier register as having no triangles when imported to editor from Blender as an FBX. ...

Dithered LOD Transition Tooltip within the Material Editor is Misleading

The tooltip states, "Wether the material should support a dithered LOD transition when used with the foliage system." It is my understanding that the foliage system uses LOD dithering by default, a ...