Unreal Engine Issues
Unreal Engine Issues
Allow promote to variable on Color structs/Vertex Colors structs for Procedural Mesh components
UE - Gameplay - Oct 13, 2015Issue: Currently, it is not possible to make a variable of type "Color" specifically for the color struct on procedural mesh components (see image attached). This is the only variable on procedura ...
Separate Translucency for Particles Breaks when Scene Color is used
UE - Graphics Features - May 12, 2015When using Scene Color in a Particle System's Material with Separate Translucency checked true, all Particles with Separate Translucency checked true placed in the level with the Scene Color Particl ...
[CrashReport] AppleIntelBDWGraphicsGLDriver!USC::CPassSsaAllocatorContext::RollbackSpillFillToCopies()
UE - Platform - Apple - Sep 2, 2016Error message: SEGV_MAPERR at 0x3a Source Context: Most recent user affected CL: 3106830 (4.13.0) Logs: [Link Removed] [Link Removed] [Link Removed] CrashReporter User Descriptions:UE4.13 immed ...
Long thin spinning objects take too long to stop spinning
UE - Simulation - Core - Jun 5, 2023See the SpinningObjectStability test map in the Physics Sandbox. [Link Removed] It's not clear if this is a bug or a side effect of some of our solver shortcuts (e.g., omission of the precession te ...
[CrashReport][Assert] UnrealEditor-D3D12RHI!FD3D12ResourceLocation::ReleaseResource() [Engine/Source/Runtime/D3D12RHI/Private/D3D12Resources.cpp:1392]
UE - Rendering - Architecture - RHI - Oct 22, 2024Users affected: 73 Total occurrences: 156 Last occurrence: October 22nd 2024, 9:59:58 am First occurrence: October 2nd 2024, 4:53:30 pm Latest version: ++UE5+Release-5.5-CL-36679577 Platform: Win64 ...
[CrashReport][GPU Crash] NodeAndClusterCull
UE - Rendering - Graphics Features - Nanite - Nov 19, 2024Users affected: 51 Total occurrences: 90 Last occurrence: November 19th 2024, 3:25:41 am First occurrence: August 7th 2024, 8:10:10 pm Latest version: ++UE5+Release-5.5-CL-37670630 Platform: Win64 [ ...
Mesh from attached USD fails to import
UE - Editor - Content Pipeline - USD - Mar 31, 2025UDN customer reported this issue: Using legacy USDImporter, the attached USD throws these ensures ensure(Primvar.Get(&UVs, Options.TimeCode)); ensure(Primvar.GetIndices(&Indices, Options.TimeCode) ...
Hovering items at bottom right of Content Browser does not display tooltip and causes cursor flicker
UE - Editor - Developer Usability - Sep 17, 2025When hovering over items located at the bottom right corner of the Content Browser while the Editor is maximized, the tooltip is not displayed. It seems that the tooltip would extend beyond the edge ...
Pathtracer - Odd results from any material adjusting normals to complement world position changes
UE - Graphics Features - Path Tracer - Sep 30, 2025Someone on the forums is reporting a possible bug with Pathtracer and any material that adjusts normals to complement world position changes. See pic attached. Reporting forum thread:https://foru ...
MAC: UE4 Editor crashes in gldReadTextureData on Nvidia 330M
UE - Platform - Apple - Dec 15, 2014A user is reporting semi-regular crashes on his MBP 6,2, with Nvidia 330M GPU. This is a GL 3.3 GPU which we don't routinely test against, he may have the 256 or 512MB model, but this is unclear. T ...