Unreal Engine Issues

External Actors can hold stale references to Blueprint classes as edited instance properties

When a component is removed from a class that exists as an instance with external actors enabled, a deleted BP component on an actor will remain referenced by the instance. Disabling External Actor ...

Crash when entering PIE after modifying BP child actor component

Asset reload results in DeadPackage with PackageReload.EnableFastPath

With PackageReload.EnableFastPath enabled, doing an asset reload, will result in DEADPACKAGE Slack thread: [Link Removed] ...

Editor preview window for CurveLinearColorAtlas does not automatically update when their CurveLinearColor asset is changed

When the CurveLinearColor asset assigned to a CurveLinearColorAtlas is edited (e.g. change the colors of the gradient), the preview window of CurveLinearColorAtlas editor does not automatically upda ...

Skeletal Mesh Customizable Object Node does not warn of changes to mesh sections.

When reimporting meshes with changes to their material sections, specifically additions, there is no indication that there will be an issue on output of a generated mesh. Ideally, we can watch for a ...

check fail in RegisterLevelInstance when calling Build HLOD with PLA

The necessary conditions to trigger the issue: The WorldPartionHLOD actor to rebuild must reference a packed level actor The packed level actor must be loaded in the map when rebuilding the HLOD ...

Landscape visualizer artifacts with nanite enabled

After changing SupportedAgent settings, old Recast nav mesh actor is not deleted when saving map with External Actors (OFPA) enabled

Context Recast lets you configure multiple agent types in Project Settings > Navigation System > Supported Agents. When agents have unique settings such as agent radius, building a nav mesh results ...

UAT crashing at end of build calling FScopedSceneLock_Chaos::LockScene()

UAT has intermittent crashes at the end of  packaging. Looks related to  [Link Removed] . Could be that the solver is being destructed after the null check earlier in the function if this is multit ...

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

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 ...