Browsing to a "Packaged Level Actor" does not take to the PackagedLevelActor inside the Content Browser.

UE - Editor - Content Pipeline - Jan 8, 2025

There is a bug inside Unreal Editor when selecting "Browse to Asset" for a Packed Level Actor. Right clicking the Packed Level Actor, all the asset options appear. If you click the "Browse to Asse ...

FLevelInstanceActorGuid::GetGuid issue in Multiplayer

UE - World Creation - Worldbuilding Tools - Level Instances - Feb 3, 2025

I am doing some runtime manipulation of data layers and I am running into a check failure due to a zero guid in FLevelInstanceActorGuid::GetGuid during multiplayer testing. When I debug FLevelInsta ...

Crash when load the levelinstance what is set "LevelBehavior=Standalone" in the stanadalone game

UE - World Creation - Worldbuilding Tools - Level Instances - Jul 16, 2024

A crash occurs when LevelInstance with LevelBehavior set to "Standalone" is loaded in a standalone game. Specifically, when LevelInstance is deleted by moving outside the loading range of the worldp ...

An imported file that resides within the project's folders gets a relative path. That path is not updated it you copy the uasset to another folder. That breaks the Reimporting functionality.

UE - Editor - Content Pipeline - Import and Export - Aug 28, 2024

An imported file that resides within the project's folders gets a relative path. That path is not updated it you copy the uasset to another folder, so from the location of the new asset's the relati ...

Crash trying to convert skeletal mesh to Nanite

UE - Graphics Features - Nanite - Mar 6, 2025

In SkeletalRenderNanite.cpp / FDynamicSkelMeshObjectDataNanite::UpdateBonesRemovedByLOD, bone indices are of type FBoneIndexType (defined as uint16 from BoneIndices.h), instead of int32. On line 18 ...

Recompiling an ABP that another ABP has a Property Access dependency on without recompiling/linking the other causes a crash

UE - Anim - Runtime - Anim Blueprints - Oct 2, 2025

The crash comes from the pointers in FAnimSubsystem_PropertyAccess::Library::Indirections in the layer ABP from pointing to old/invalid functions and properties from the trash ABP_Manny, as they hav ...

Deleting transient actor marks level dirty

UE - World Creation - Worldbuilding Tools - Feb 6, 2025

The licensee has noticed that the deletion of a transient actor still marks the scene as dirty and asks it to be saved. Checking the source it was noted that the transient flag is not verified on de ...

Crash occurs when creating a New Level from the Levels window while it is pinned to the side bar

UE - World Creation - Worldbuilding Tools - May 2, 2022

An assertion occurs when creating a New Level from the Levels window while it is pinned to the side bar. ...

Chaos Modular Vehicles Examples desynchronizes easily

UE - Simulation - Gameplay - Feb 27, 2025

Chaos Modular Vehicles Examples does not replicate properly and it's easy to reach a state of desynchronization where the state stops being replicated and position/rotation of cars mismatch. As an ...

BoxOverlapActors fails to catch an Overlaped actor with a particular scale, from a particular position

UE - Simulation - Core - Sep 30, 2025

BoxOverlapActors fails to overlap a scaled Floor actor with a particular scale, from a particular position and extent. The setup is really specific and described in Steps to Reproduce. The required ...