Unreal Engine Issues

MoviePlayer loading screen with FLoadingScreenAttributes::bAllowEngineTick results in high DeltaSeconds tick post-playback

IGameMoviePlayer playback of a movie during loading screen lets you set bAllowEngineTick  = true as a parameter. This will make FDefaultGameMoviePlayer manually tick the engine: if (GEngine && bAll ...

UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future

A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...

In Editor, Blueprint resources are not freed up when the Blueprint is closed

It appears that the preview scene used to render thumbnails is not destroyed after a thumbnail is rendered, even after the blueprint editor is closed and GC is run. Also found in Release-5.4, CL: 31 ...

Rect + Spot Light Anomalies when Baked with GPU Lightmass

Missing Dynamic Shadows when forcing volumetric lightmap only for static meshes

RemoteRole of local pawn on a listen server is ROLE_AutonomousProxy

This issue was previously reported at [Link Removed], but it seems to have regressed due to the change at CL 23357753. GetNetMode is correctly returning NM_ListenServer, but APawn::PossessedBy now c ...

USplineComponent::GetSplinePointAt() returns FSplinePoint with incorrect Type

USplineComponent::GetSplinePointAt() returns an FSplinePoint with the ESplinePointType 'CurveCustomTangent' rather than the type from the setup.Expected: It should return the correct type. ...

Components added in Blueprint that want initialisation are not maintained by RerunConstructionScripts

When a native component that wants initialisation is added to a Blueprint actor in the Blueprint editor, the initialisation state of this component will not be correctly preserved by RerunConstructi ...

Cursor input does not work properly in exclusive fullscreen mode on a secondary monitor

Input doesn't seem to work properly when using exclusive fullscreen mode on some monitor other than the primary monitor. This is similar to other issues we've seen in the past with the cursor being ...

DeactivateImmedaite does not properly complete the system if it's already been culled by scalability

[Link Removed] UDN user found issue. Reproduced internally with custom debug code. ...