Unreal Engine Issues

References to recompiled Blueprint CDOs that exist outside of the immediate class hierarchy are not being replaced during compilation.

Currently, the Blueprint compiler will only update references to a reinstanced CDO/archetype object if it falls within the immediate hierarchy of the Blueprint class type OR if it's a component temp ...

UE5 Main - Editor crashes when creating a Data Table

Doesn't occur in UE5 Release or UE4.Can't attach logs/crash information I'm encountering an RHI crash within UE5 Main at the moment. This issue seems to be caused by a commit from last year that ...

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 ...

Changelists window refreshes excessively

When View Changelists window is opened, users are reporting slowdowns from actions such as moving actors (external actors). ...

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.

Using High Resolution Screenshot while the viewport is in Full Screen causes massive performance issues after the screenshot is successfully taken until the Editor is restarted

This is a regression. Maybe Binary only if it hasn't already been fixed. Tested in:StreamCLTypeResults//UE5/Main18386535PerforcePerformance is normal after screenshot//UE5/Main18218925Perforce Per ...

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 ...

Editor crashes when creating a new level while the current level contains an Actor with an Actor Sequence Component

This is not a regression. Tested in: //UE5/Main CL18218925 Binary - Crashed //UE5/Release-5.0 CL16682836 Binary - Crashed //UE4/Release-4.27 CL Binary - Crashed Having a level open that contains a ...

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 ...