Unreal Engine Issues
Unreal Engine Issues
Reimporting FBX imported with Import Into Level does not maintain the changed material.
UE - Editor - Content Pipeline - Import and Export - Jul 13, 2022If you import by drag & drop without Import Into Level, the material will be maintained even if you change it. This is because FFbxImporter::ReimportStaticMesh() sets ImportOptions->bImportMaterial ...
RayTracing Final Gather is not working in UE 5.1
UE - Graphics Features - Ray Tracing - Apr 12, 2023Further Comments: Customer is using the deprecated ray traced mode. ...
Crash when exiting editor before EditorUtilityTask completes
UE - Editor - UI Systems - May 29, 2024If exiting the editor before the EditorUtilityTask completes, it crashes. It will not crash if canceling the UtilityTask and then exit the editor. The following implementation does not allow destruc ...
USplineMeshComponent::CalcBounds may return invalid value
USplineMeshComponent::CalcBounds function should be returning an FBoxSphereBounds type, but in the implementation it instead outputs an FBox. This may result in the returning of invalid results, esp ...
Performance slowdown when ray tracing is disabled due to SetResidencyPriority
UE - Rendering Architecture - RHI - Jul 17, 2025When a game is compiled with ray tracing disabled (D3D12_RHI_RAYTRACING=0) and the GPU the game is running on becomes low on VRAM, frame time is negatively impacted and doesn't recover. The D3D12_RH ...
Uasset causes editor to crash when opened/right clicked
UE - Gameplay - Blueprint - Oct 21, 2014Character asset will crash the editor immediately when opened or right clicked. Crash Report: 431837 ...
HydroErosion on landscape crashes on Linux
UE - Platform - Linux - Mar 13, 2015While on a Linux OS, the editor immediately crashes if the Hydro Erosion tool is used on a landscape. ...
Newly Created Landscape using Material with Displacement and Tessellation Flickers
UE - LD & Modeling - Terrain - Landscape - Apr 8, 2016Upon creating a new landscape that uses a material with displacement and tessellation, the landscape and its respective components will flicker. The flickering can be removed when you begin sculptin ...
Editor crashes when attempting to doubleclick static mesh in content browser
UE - Graphics Features - Jan 16, 2015Edit: Fatal error: [Link Removed] [Line: 1467] Couldn't find Shader TShadowDepthVSVertexShadowDepth_OutputDepthfalse for Material Resource M_Base_Advanced_blend! With VF=FLocalVertexFactory, Platf ...
Spline blueprints cause negative values in Scene Outliner until build pressed again
Tools - Nov 6, 2014Moving a spline mesh in the viewport causes negative values to be applied in the scene outliner actor count until the level is built again. ...