Crash on LinkerLoad trying to load font on the render thread

Tools - Aug 5, 2016

Assertion failed: FPlatformTLS::GetCurrentThreadId() == OwnerThread [Link Removed] [Line: 4641] Callstack: > UE4Editor-CoreUObject-Win64-Debug.dll!FLinkerLoad::Serialize(V, Length) Line 4641 C++ ...

[CrashReport] UE4Editor-MetalRHI.dylib!FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState()

UE - Graphics Features - Jun 29, 2017

This is a common crash affecting Mac users in the 4.16 release. Mark.S: "one of the visualisation shaders is setting up bogus render state" Callstack from LogLogActorFactory: Actor Factory create ...

[CrashReport] UE4Editor-MetalRHI.dylib!TranslatePrimitiveType()

UE - Graphics Features - Nov 16, 2017

This is an infrequent but longstanding Mac crash that has occurred since at least UE 4.15. User DescriptionsTried to look at LOD Coloration Callstack from Log[2017.11.15-20.09.54:885][537]TextureS ...

Priority order of texture parameters on post process material instances is inverted

UE - Graphics Features - Jan 13, 2025

The texture parameters on material instances applied to post process volumes do not respect the priority order of the post process volume, and are in fact inverted relative to the priority of other ...

Changes made with the property matrix are undone when compiling a widget

UE - Editor - UI Systems - Apr 7, 2017

Changes made with the property matrix are undone when compiling a widget ...

Construction Script Does Not Update Parameters Of An Actor Component

UE - Gameplay - Oct 16, 2018

The construction script does not update the parameters of the actor component. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 Preview 1 CL# 4435822, 4.22 CL# 4470579 ...

Vertex Painting changes collision complexity if the asset is saved while vertex painting

Tools - May 12, 2016

Vertex Painting changes collision complexity if the asset is saved while vertex painting. The collision change is set to "Use Complex Collision as Simple". If this is intended functionality there sh ...

Groom component created from Blueprint ignores "Forced LOD" on LODSync component

UE - Graphics Features - Nov 17, 2022

Regression: Issue occurs in //UE5/Release-5.0 This issue occurs with any Groom Asset created from a Blueprint. Other components work properly with the Forced LOD settings, as only the Groom does no ...

Volumetric Lightmaps do not work with Landscape texture mapping

UE - Graphics Features - Feb 13, 2019

It appears that the Lightmass Volumetric Lightmap does not work with Landscape textures. When it samples the Landscape with some textured material, the resulting lighting build data does not match t ...