Unreal Engine Issues
Unreal Engine Issues
Bundled compute PSO compilation stalling tender thread
UE - Rendering Architecture - RHI - Feb 13, 2025EA Motive has pointed out a potential bug they found related task graph synchronization and when compiling compute PSOs: [Link Removed]. From the screenshot they sent over, it seems that a task grap ...
Texturing: RC 1.5 texturing hangs, RC 1.4.2 works fine with same dataset and workflow
RC - Texturing - Feb 13, 2025Tested on the provided project, it looks like the unwrap was provided, but then the process stuck. I also checked the Task manager and there wasn't almost any activity for RealityCapture.[Image Remo ...
Cards for a Groom asset do not update normals during simulation
UE - Graphics Features - Feb 13, 2025When a groom is allowed to simulate, only the strand representation computes correct world normals for the new hair strand positions. This is especially noticeable when the groom is inverted as grav ...
D3D12 Does Not Correctly Validate Static Uniform Buffers Correctly
UE - Rendering Architecture - RHI - Feb 12, 2025When adding a Uniform Buffer Struct that has one 4x4 matrix to a mesh pass, validation will fail, due to a Uniform Buffer Struct mismatch. This can be reproduced by adding a mesh pass in project-si ...
When MotionExtrantorModifyer is applied to skeletal mesh, it outputs warning about module loading of AnimationModifierLibrary at editor startup in ThirdPerson C++ project.
UE - Anim - Runtime - Feb 12, 2025When MotionExtrantorModifyer is applied to a skeletal mesh, it outputs an import error of AnimationModifierLibrary when the editor is launched. The project module and the AnimationModifierLibrary mo ...
Backwards-compatibility broken for the CDOs of Python-generated Unreal Types because of missing redirectors
UE - Editor - Workflow Systems - Feb 11, 2025Previously, all Unreal Types generated by python scripts would be created inside package "/Engine/PythonTypes". This was changed by [CL 32478991 in ue5-main branch], which meant to "remove the restr ...
Bug in ULevel::FixupActorFolders.
There is a potential bug in ULevel::FixupActorFolders() in the FixDuplicateFolders section: Suppose you have a folder hierarchy that looks like this:A B(1)B(2) C(1)B(3) C(2) where the letters ...
Add Substrate Material Support to Lumen Performance Overview
UE - Graphics Features - Substrate - Feb 10, 2025There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...
[AI] Navigation System can be constructed in situations where the NavigationObjectRepository subsystem is not valid
UE - AI - Navigation - Feb 7, 2025Investigate and fix all calls where the Navigation System is constructed without the NavigationObjectRepository subsystem being valid. ...
[AI] "LogNavigation: Warning: UNavigationObjectRepository is required for navigation system operations" when cooking a project with validation enabled
UE - AI - Navigation - Feb 7, 2025The cook completes with a warning for "LogNavigation: Warning: UNavigationObjectRepository is required for navigation system operations" which causes many CI pipelines to fail as they use treat warn ...