Crash when spawning actor with no viewport initialized

UE - Editor - Workflow Systems - Nov 22, 2023

If an attempt to spawn an actor is made before the Level Editor Viewport is fully initialized (i.e. before it has had a chance to get rendered at least once), and that actor has no specific Factory ...

"Favorite Levels" not persisting correctly when changed in the Editor

UE - Editor - Workflow Systems - Nov 21, 2023

In the Level Editor's "File" menu, there is a "Favorite Levels" list, which is persisted in the config file "EditorPerProjectUserSettings.ini" under section "[FavoriteFiles]". Manually editing this ...

PCG graph always resave in the ResavePackage commandlet

UE - World Creation - Procedural Tools - PCG Graph - Nov 20, 2023

The package that contains the PCGGrapch is dirtied on load (UPackage::SetDirtyFlag) which triggers a resave operation. I traced it back to the following callstack: UnrealEditor-CoreUObject.dll!UPac ...

FPropertySoftPath::Resolve doesn't resolve c-array elements properly

UE - Gameplay - Nov 20, 2023

a fix was proposed in the UDN but it needs to be tested and revised ...

Single sided complex collision mesh collision blocks character movement from backside

UE - Simulation - Physics - Query - Nov 17, 2023

Commenting out the branch in FTriangleMeshSweepVisitor::VisitSweep is a work-around.if (CullsBackFaceSweepsCode != 0) { if (VectorMaskBits(IsBackFace)) { // Don't cull the back face ...

In-editor hitch when deleting one actor in a world with many loaded actors

UE - Foundation - Core - Nov 17, 2023

When editing a level with many actors (1000+), deleting an actor results in a noticeable hitch: the editor becomes unresponsive for seconds. This hitch becomes longer the more actors are loaded and ...

GameplayAbilitiesSystem: GameplayCues OnRemoved never firing

UE - Gameplay - Gameplay Ability System - Nov 15, 2023

This behaviour was introduced in the following changelists in 5.3: CLs 25371706 and 25407985 https://github.com/EpicGames/UnrealEngine/commit/6e985ceeb98bc0d166756ccd3e3c0b0350d02265https://github. ...

Media Player can't continue to play after the progress bar is dragged.

Media Framework - Nov 15, 2023

This bug occurs in 5.3 version. It's ok in 5.2 version. ...

Incorrect Subsurface Profile Transmission rendering in Preview window

UE - Graphics Features - Nov 14, 2023

Subsurface material rendered in preview window has too intense subsurface scattering or strange artifact. However, it shows no error in Play in Editor. After disabling the contact shadow in PIE, abl ...