Unreal Engine Issues
Unreal Engine Issues
Raytraced translucency makes ExpHeightFog black
UE - Graphics Features - Mar 17, 2023Does not occur in path tracing nor rasterized translucency. ...
Editor iOS rotation specifiers are not followed (especially Portrait)
UE - Platform - Apple - Oct 20, 2023Specifying which orientations the iOS app supports are not honoured correctly. ie: a landscape only game will still render in Portrait mode even when Portrait is disabled in the iOS Settings panel ...
Recent change to Material Expression code missing a case for "exp2" function in switch (cpp)
UE - Editor - Content Pipeline - Datasmith - Mar 4, 2024The function "FMaterialDerivativeAutogen::GetFunc1ReturnType(...)" does not have a case for "EFunc1::Exp2". Also found in Release-5.4, CL: 331987674 ...
Assertion failed: ExportSettings == *ExistingExportSettings [File:D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Lightmass\Lightmass.cpp] [Line: 546]
UE - Graphics Features - Sep 12, 2023Generated from CrashReporter Logs can be obtained via Crash Reporter ...
Setting a poseable mesh component as leader component for a skeletal mesh component causes an access violation.
UE - Anim - Runtime - Jun 11, 2024When a skeletal mesh component's leader component is set to a poseable mesh component, the application will run into an access violation when it tries to update animation curves and morph targets. ...
Imported material is incorrectly tinted when imported via Interchange.
TM - Interoperability - Dec 13, 2023Materials are correct in UE. It is not clear for me why the materials have tint. Possibly a remnant from the DCC. Sketchfab, UE, and Blender displays the materials cortrectly, without the blue tint. ...
Material not compiling due to WorldAlignedTexture connected to multiply
UE - Rendering Architecture - Materials - Jul 23, 2024When a WorldAlignedTexture node is connected to multiply and then to a base color output, the material cannot be compiled, giving an error about an undeclared local variable "Local27". Does not happ ...
Object Tracks in SubSequencer Lose References When Blending is Enabled
UE - Anim - Sequencer - Apr 4, 2025We're encountering an issue when using object tracks in subsequencer. When enabling blending on a subsequencer section, the object reference resets throughout the entire duration of the track. Inte ...
DiffuseIndirect_Lumen_3 parameter missing and causing crash with Screen Space reflections and Lumen Async Compute
UE - Graphics Features - Lumen - May 3, 2025When the Reflection Method is set to Screen Space and Lumen reflections async compute is enabled Unreal will crash because DiffuseIndirect_Lumen_3 parameter missing, due to how DenoiserOutputs are o ...
Texture incorrectly set when importing glTF via Interchange.
UE - Editor - Content Pipeline - Import and Export - May 6, 2025Some Materials in this glTF model will not use the correct texture on import. Find interior doors. They will be Green when they should be set to use Wood_Basecolor texture and not Wood_Basecolor1 ...