Unreal Engine Issues

World Position is incorrect when used to control the opacity mask in a nanite spline mesh

When calculating the opacity mask, Nanite spline meshes do not have the correct World Position in the Material. This leads to visual artifacts when the mask relies on the world position. ...

Skylighting on distant objects causes severe flickering with Lumen

Lighting on distant meshes flickers when using Lumen and Skylights. Turning Lumen off and lighting from the skylight is stable. Turning off Lumen screen traces also lowers the amount of flickering ...

Feature Request: Expose API to iterate the existing log categories and verbosity

WidgetComponent is not updated with occlusion culling disabled

LastRenderTime is never updated with occlusion culling disabled, so the widget component will always stop updating.  (see UWidgetComponent::ShouldDrawWidget) Developers can force updates by TickWhen ...

Cannot assign a MediaTexture asset to a Brush -> Image in Widget Blueprint

Can't assign Media Texture assets to the Brush->Image property in Images on Widget Blueprints. This workflow is explicitly mentioned as a step in these docs, so if this is no longer the correct meth ...

Server will process moves from client with bReplicateMovement set to false

UCharacterMovementComponent::ReplicateMoveToServer checks IsReplicatingMovement before sending moves to the server, but the server does not check IsReplicatingMovement when processing these received ...

Objects that return false for NeedsLoadForClient not loaded on listen servers

For instances that are not a dedicated client or dedicated server (e.g. packaged games with TargetType "Game"), GIsClient will be true, but GIsServer will be false. This leads to objects that retur ...

Iris - Fast Array ItemMap is empty in PostReplicatedAdd

With Iris enabled, the ItemMap is populated correctly only on the next frame, but it is empty during the callback. This differs from the behavior of the current system, where the ItemMap is populat ...

Spawnable Post Process Volume does not draw bounded values after saving and reopening a level

Reproduction Attempts: 3/3 Doing some additional testing for Spawnable Post Process Volumes in a level sequence, the PPV does not appear after saving the level and level sequence, closing and reope ...

Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components

When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...