Unreal Engine Issues

Grouped actors missing material element slots in details panel after reselecting

Ensure tripped: "Template Mismatch during attachment."

Imported FBX or USD tree - visually missing geometry when converted to Nanite

When the static mesh tree (brought in thru USD/FBX) is converted to Nanite - the tree thins, or rather visually thins - the thinner branches and/or leaves do not render in the viewport and go missin ...

References to external actors are not removed when a data layer is deleted

Data layers still contain references to external actors when they are deleted. ...

VirtualHeightfieldMesh shadow issues

A UDN reported ensure being encountered with VirtualHeightFieldMesh rendering on UE5. Those ensures remain an issue on 5.1 (UE5/Main) as of CL 19779838. [Link Removed] Attempting to repro on PC, th ...

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 ...