Error when merging meshes with sections

UE - World Creation - Worldbuilding Tools - Merge Actor - Sep 6, 2023

Note that the issue does not happen if the two materials have different colors. Note also that the issue happens if one of the meshes to merge has 2 sections with the same material assigned ...

Client cannot find LevelStreaming in editor mode

UE - World Creation - Worldbuilding Tools - Sep 6, 2023

From licensee: When we run MainMap (NM-Standalone) and then open GameMap to play (options - listen). When the client joins the server, it won't be able to find the LevelStreaming in GameMap (see - ...

UHT doesn't warn that a class/structure size is larger than 65535

UE - Foundation - Cpp Tools - UnrealHeaderTool - Sep 1, 2023

Static Mesh Scene Actor Flipped Normals

UE - Rendering Architecture - Aug 31, 2023

Static meshes can have normals flipped when the actor they are attached to has one component of its scale inverted. ...

Crash when adding foliage instances to unloaded IFA

UE - World Creation - Worldbuilding Tools - Foliage - Aug 31, 2023

Ran into a crash when trying to programmatically add foliage to a large WP level with some unloaded IFAs.  ...

Transient Subclasses of ABrush default to supporting external packaging

UE - World Creation - Worldbuilding Tools - OFPA - Aug 29, 2023

ABrush::SupportsExternalPackaging overrides the base implementation of  AActor::SupportsExternalPackaging which returns false for transient actors, but it doesn't call super. As a result, transient ...

Unable to set simulate physics to false through blueprints

UE - Simulation - Core - Aug 24, 2023

If "Editable when Inherited" is disabled for the static mesh component the issue does not occur. The bug could be related with other UDN cases:https://udn.unrealengine.com/s/case/5004z00001ruXmEAAU ...

Spawnable Level Instance via Sequencer in WP map

UE - World Creation - Worldbuilding Tools - Level Instances - Aug 21, 2023

ULevelInstanceSubsystem::OnActorDeleted: check(!IsEditingLevelInstanceDirty(LevelInstance) && !HasDirtyChildrenLevelInstances(LevelInstance)); ...

Nanite mesh is shown with player collision

UE - Graphics Features - Nanite - Aug 21, 2023