Unreal Engine Issues

Static meshes disappear after changing a property in the collision category if Enable Async Static Mesh Compilation is false

Editing sets and maps of structures does not correctly check for duplicates

Customer created a custom DataTable with a TSet Property and saw the behavior of allowing duplicate elements within the TSet, which is not allowed. See TSet Documentation for more information. This ...

Actors which do not have a custom actor factory implementation will not get their preview setting set on drag/drop from content browser

Cook failure when World Partition maps have level instances using level blueprints

The following cook error results from attempting to package a WP map that has level instances using level BPs: LogCook: Error: PackageSplitter found the Generator package still in memory after it ...

EditInlineNew properties on components don't work if the component name has whitespace

EditInlineNew properties on components can't be properly set if the component name has whitespace in it. This appears to be a problem with resolving the property name in SPropertyEditorEditInline::O ...

Alembic Caches Not Working With Lumen

It appears that Alembic caches do not influence Lumen's indirect lighting (except for shadowing). Alembic geometry caches should influence lighting in Lumen as any other geometry in a level. I hav ...

HLOD lightmap lost after level reopening with "save LODActors to HLOD Packages" option in project settings is on.

C.haos Cloth : ClothLOD does not change when out of view

Cloth LOD Index is changed only during the mesh is on the screen. LOD Index is set to 0 at spawning, so clothing simulation runs as minimum LOD level until the mesh is in the field of view. It's no ...

1 frame flickering when creating UMG using Textblock, ScaleBox and Overlay

As a report of a similar issue, changing the text to right-aligned causes a similar issue. This issue seems to have been occur by a change in CL7540157. It also seems to be improved by adding the p ...

Warning Failed to find object 'Class None.NewBlueprint' appears on any selection ChildActor Component in BlueprintEditor

Summary: The following warning appears on each selection of any ChildActorComponent inside Blueprint Editor:LogUObjectGlobals: Warning: Failed to find object 'Class None.NewBlueprint1' (where NewBl ...