Unreal Engine Issues
Unreal Engine Issues
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...
Performance hitch from RemoveGeometryCache flushing the render thread
UE - Editor - Content Pipeline - Alembic - Jun 12, 2025FGeometryCacheStreamingManager::RemoveGeometryCache calls FlushRenderingCommands which shows up as a hitch when profiling. [Link Removed] Ideally the flush added in CL#23782411 to fix a rare deadl ...
StreamableManager does not apply CoreRedirects to loaded paths
UE - Framework - Jun 12, 2025When loading soft object paths directly, it applies any important CoreRedirects by calling the function FixupCoreRedirects if the initial load attempt fails. In the repro steps, this will apply this ...
Staging a patch does not copy pak signatures when staging
UE - Foundation - Jun 10, 2025When creating a patch with pak signing enabled the created output folder contains the pak files from the base release but does not contain the .sig files, even if they were enabled when creating the ...
The selection operation with notify track in Persona is not compatible with custom window display scaling
UE - Anim - Runtime - Jun 4, 2025It appears that notify track does not follow the size of the custom window scale. As a result, display problems may occur, and events may be placed in unexpected positions. This is similar to [Link ...
PlayerCameraManager->OnBlendComplete() delegate not getting called
UE - Gameplay - Gameplay Cameras - May 29, 2025The PlayerCameraManager->OnBlendComplete() delegate is not getting called when running a game in a standalone network mode without any networking. ...
Crash when two textures reference eachother as composite textures
UE - Texture - May 28, 2025When (unintentionally) trying to set one texture as the composite texture of another, which itself is the composite texture of the first, a stack overflow occurs leading to a crash: in UTexture::Pos ...
Scene with texture collection crashes when dumping a full memreport
UE - Rendering Architecture - RHI - May 28, 2025A licensee has reported that generating a full memreport of a packaged project which uses a texture collection leads to a crash. ...
When importing static mesh using interchange and collision is generated, the asset does not have Collision Generated set to true
UE - Editor - Content Pipeline - Import and Export - May 19, 2025Context: The Interchange Framework is Unreal Engine's import and export framework. When importing a mesh without collision, collision can be auto-generated. Problem: The problem is when importing s ...
Generated instances can not be cleaned up when PCGVolume is copied to a different level
UE - World Creation - Procedural Tools - May 19, 2025Copying a PCGVolume beyond a level creates an instance that cannot be deleted. In UE5.5 or later, it is possible to delete the instance by pressing Cleanup button with Ctrl key (purge all components ...