Asset Registry GetDerivedClassNames does not work properly during editor startup

UE - Foundation - Core - Jun 25, 2020

This bug comes from https://udn.unrealengine.com/questions/585499/view.html which describes a problem where a licensee is trying to use the AssetManager to scan a primary asset type that is generate ...

Crash when cooking landscape collision in world partitioned level

UE - Graphics Tools - Terrain - Landscape - Jun 24, 2022

This is caused by the loss of data in the ULScapeHeightfieldCollisionComponent::CollisionHeightData. The CollisionHeightData is not marked as BULKDATA_PayloadInSeperateFile and is processed with a k ...

[StateTree] Reentering current state immediately after exiting does not reset variables on tasks with "Should State Change on Reselect"

UE - AI - StateTree - Nov 7, 2024

Context State Tree Tasks have a configurable default value 'Should State Change on Reselect' which controls whether the task receives a EnterState/ExitState if completion of the current state is fo ...

Error in output log when Revision Control submits an asset for deletion with Virtual Assets enabled

UE - CoreTech - VirtualAssets - Feb 17, 2025

With Virtual Assets setup in a project, when an asset is deleted and the changelist then submitted via revision control, the virtualization system will attempt to read the deleted asset. The submit ...

Moving objects in editor does not update collision

UE - Gameplay - Apr 7, 2015

When an object is created procedurally with code and placed into the editor the collision analyzer will detect the object properly. If the object is then moved to another part of the level the coll ...

BP Component is not destructible if the Object Type is set during runtime

UE - Simulation - Physics - Destruction - Mar 16, 2015

BP Component is not destructible if the Object Type is set during runtime. If the Object Type is set manually before PIE is started, the BP component will destroy correctly. ...

Slate draws the elements of an array even when the array is collapsed

Tools - Aug 20, 2015

The elements of an array that are shown in the details panel (below the world outliner) are drawn even when the array is collapsed. This can cause a performance drop when using an array that has a l ...

Clear Timer by Function Name does not appear to be callable from a widget blueprint if the function is owned by a UObject

UE - Editor - UI Systems - Dec 12, 2016

Clear Timer by Function Name does not appear to be callable from a widget blueprint if the function is owned by a UObject. The Timer clears when the custom event is called by other blueprints, howev ...

Refreshing node does not resolve error and causes tooltip to display another line with same message with each refresh.

UE - Gameplay - Apr 14, 2017

Clicking the compile button in the Blueprint editor resolves the error. ...

Replicated Movement doesn't replicate itself to all clients on Dedicated Server

UE - Simulation - Physics - Jul 31, 2018

This is a regression from 4.19.2 (CL-4033788). The pawns aren't replicating their own movement on their clients, but they are replicating on the clients of other pawns. This was reported and teste ...