Unreal Engine Issues
Unreal Engine Issues
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When exporting from a level sequence, the LOD for the bones is based on the camera distance, instead of using LOD0
UE - Anim - SequencerWhen exporting a level sequence to an animation sequence, the bones used will be based on the LOD for the current camera location, instead of ...
Actors transforms broken in cooked builds when their parent is an IsEditorOnlyActor
UE - Foundation - Data Pipeline - CookerWhen creating a hierarchy of Actors in the Outliner, the transform of the "child" actors will be reset if their Parent's IsEditorOnlyActor pro...
Missing Material IDs in exported CSV in 2025.2
TM - InteroperabilityReported in SF [Link Removed] When exporting material IDs in 2025.2, downloaded materials appear to be missing from the exported CSV. In 202...
HZB Occlusion causes large stalls on the render thread
UE - Rendering Architecture - RHIHZB Occlusion causes large stalls (greater than 5ms seen) on the render thread due to an RHI flush. This is caused by the following code in FD...
Vertex color does not work on Skeletal Mesh with Nanite enabled
UE - Graphics Features - NaniteNanite enabled skeletal meshes don't work with materials containing a vertex color node. The vertex color material does work for non-Nanite sk...
Many downloaded cloud items cause a performance issue when booting Twinmotion
TM - InteroperabilitySee slack thread: [Link Removed] Resume : In the context of the object substitution for Revit, when TM starts, it exports a csv listing the a...
SetActorLabel() is slow on Landscapes
UE - Graphics Tools - Terrain - LandscapeI've noticed calling SetActorLabel() on a Landscape will call PostEditPropertyChanged() which causes the Landscape Components to regenerate al...
"Filter Recursively" option in the Content Browser does not function
UE - Editor - Applied Usability[Level Instances] Editor Actor Folders does a full refresh after any LI is loaded, leading to wasted time when bulk loading LIs for a given WP region load
UE - World Creation - Worldbuilding Tools - Level InstancesFrom Licensee: We discovered a pretty big performance hit in editor when loading level instances for a world partition map, specifically: Ed...
Crash when running "MAP REBUILD ALLVISIBLE" with hidden sublevels and then changing maps
UE - World Creation - Worldbuilding ToolsRunning the MAP REBUILD ALLVISIBLE editor command when the current map contains hidden sublevels causes a crash upon changing maps. The issue ...