Unreal Engine Issues

Custom buffer visualization material instance problem

Material Instances used in Custom Buffer Visualizations do not respect parameter overrides, and use the parent material's values. Also tested on UE5-Main, CL: 34543023 ...

All public inline methods of class "FBlueprintEditor" are inaccessible to other modules due to "DLLIMPORT"

Class "FBlueprintEditor" has several inline getter methods as part of its public API (e.g. GetPreviewActor() and GetPreviewScene()). However, even though they are public, those methods are inaccessi ...

The light in the Blueprint Editor's Preview Scene does not respond to any lighting channel but 0.

In the Blueprint Editor, Primitive Components can be configured to respond to Lighting Channels 0, 1, and/or 2. However, if channel 0 is disabled (even with another one enabled), the Preview Actor's ...

README files for Mover and Network Prediction are missing from distributed UE builds

The Network Prediction and Mover plugins both have readme files in their plugin's root, but these files are somehow filtered out during the process of assembling a distributed build. ...

Geometry Collections don't support any collision visualization modes (Collision, CollisionVisibility or CollisionPawn)

Geometry collection objects do not display any collision visualization, either collision color or wireframe overlay when the view mode is set to Player Collision or Collision Visibility or when the ...

USkeletalMeshComponent::SkeletalMeshAsset modified value is lost when changing via level details panel

USkeletalMeshComponent::SkeletalMeshAsset is transient so it seems that any modified value that is set via the level details panel on an existing actor is lost.  We deal with this same problem for o ...

HLODs generate incorrectly with Substrate enabled

Happens when using multiple layers:"Testing this further it appears that it only occurs with multiple HLOD layers. The default setup has an instanced HLOD with a merged mesh HLOD parent. If you remo ...

Cloth Asset - Cloth bounces off wildly during the rendering of a sequence in MRQ.

The motion blur rendering is causing some issues when rendering the cloth asset as the timestep wildly changes without the number of substeps being increased, The movie pipeline code needs to man ...

pose search cook determinism issue

In class UCancellableAsyncAction, methods IsRegistered() and ShouldBroadcastDelegates() still return true after Cancel() or SetReadyToDestroy() unregisters the object.

Class UBlueprintAsyncActionBase provides methods RegisterWithGameInstance() and SetReadyToDestroy(), which respectively register and unregister the object with the game instance. Derived class UCanc ...