Unreal Engine Issues
Unreal Engine Issues
A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work.
UE - Runtime - Simulation - Nov 22, 2024A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work. The licensee noticed that IPhysicsProxyBase* ...
[CrashReport] UE4Editor-MetalRHI!MetalLLM::LogAllocTexture(mtlpp::Device&, mtlpp::TextureDescriptor const&, mtlpp::Texture const&) [MetalLLM.cpp:240]
UE - Rendering - Architecture - RHI - Mar 13, 2020Generated from CrashReporter ...
[CrashReport] UE4Editor-MetalShaderFormat!SingleCompilerSetup(EAppleSDKType) [MetalShaderCompiler.cpp:716]
UE - Platform - Apple - May 6, 2020Generated from CrashReporter ...
Crash caused by a race condition in Nanite::DispatchBasePass()
UE - Rendering - Graphics Features - Nanite - Feb 25, 2026Nanite::BuildShadingCommands() launches two asynchronous tasks: ShadingCommands.SetupTask ShadingCommands.BuildCommandsTask BuildCommandsTask is responsible for modifying ShadingCommands.Commands ...
VR Preview Crash when using split screen
UE - Platform - XR - Jun 3, 2016If the user tries to use split screen in the editor along with VR preview, the editor will crash ...
Animation System relies on FindFunctionByName which is not thread safe.
OLD - Anim - Mar 29, 2017Currently, there are several places in FAnimInstanceProxy and FAnimNode_Base (and derived classes) that rely on FindFunctionByName in order to resolve transitions, evaluate pins, etc. This can happ ...
~FStaticMesh() can crash with race condition
UE - Graphics Features - Mar 21, 2017UDN user reported frequent crashes in FStaticMesh::~FStaticMesh() on DrawListLinks[i]->Remove(false); Crash went away after adding critical sections to FStaticMesh::LinkDrawList(), FStaticMesh::Unl ...
Mutable references MetaHumans heads directly, but DNA Assets are private
UE - Anim - Mutable - Sep 18, 2025When we switched our project to 5.6.1 This error appeared on build. The compilation of the Mutable assets in the editor is not reporting any issue. ...
Linux crash on Import
UE - Platform - Linux - Jun 2, 2016Attempting to import content into a project causes the editor to crash on Linux ...
Intermittent Crash in Pose Search during Cook
UE - Characters - Animation - Jan 27, 2025User reports that they've been running into an intermittent crash in Pose Search during Cook. Pose Search attempts to index data outside the bounds of an array. Based on the logs, each asset seems t ...