Custom UVs don't store information properly in layered materials.

UE - Rendering - Architecture - Materials - May 9, 2022

[Link Removed] I have this set up so that FX artists can stack UV manipulations, so I don't want to just have all the UV manipulation in the layer with the base color, even though that does give me ...

Crash due to LAN beacon packet incompatibility in 4.22

UE - Networking - Apr 17, 2019

We changed the IP address serialization format without bumping the LAN beacon packet version. Should just need to bump it up. ...

[CrashReport] Fatal Error: Ran out of memory - GenerateInstancedStereoCode() shadercompiler.cpp

UE - Rendering - Architecture - RHI - Nov 10, 2017

This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 174 if (GWarn) 175 { ...

[CrashReport] UE4Editor-D3D12RHI!static void SetRayTracingHitGroup(class FD3D12CommandContext & const, class FD3D12RayTracingShaderTable *,

UE - Rendering - Architecture - RHI - Jul 14, 2020

Generated from CrashReporter Error Message: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000088 User message (Aritzia_Bistro.log): datasmith re-import ...

Send "Enter Key" is not working with press and release key in Web Browser plugin

Tools - Mar 3, 2020

When trying to send the Enter Key to Web Browser using the Press and Release function, it does not work. This function works with any other key that you try to send. A repro project is attached tha ...

FBX Export - StaticMesh export to FBX crashes if UVElements has more channels than VertexInstanceUVs

UE - Editor - Content Pipeline - FBX - Jan 22, 2026

As indicated in the repro steps, we have a StaticMesh asset that, for some reason, has a mismatch in their serialized bulk data where:MeshDescription->GetNumUVElementChannels() == 2FStaticMeshConstA ...

Editing sets and maps of structures does not correctly check for duplicates

UE - Editor - Workflow Systems - Apr 12, 2022

Customer created a custom DataTable with a TSet Property and saw the behavior of allowing duplicate elements within the TSet, which is not allowed. See TSet Documentation for more information. This ...