Unreal Engine Issues

PCG graph always resave in the ResavePackage commandlet

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

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

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

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 ...

MoviePipeline: Field of View doesn't match viewport when using the Squeeze Factor property

GameplayAbilitiesSystem: GameplayCues OnRemoved never firing

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.

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

Incorrect Subsurface Profile Transmission rendering in Preview window

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 ...

Reflection Capture primitive invalidation in 5.3.1 causes massive hitches.

Renaming a Blueprint interface asset doesn't update the ImplementedInterfaces list in the Blueprint editor's Class Settings tab

There is no UI refresh for the Implemented Interfaces list in the Blueprint editor UI after a Blueprint Interface asset is renamed in the Content Drawer. Consequently, the interface cannot be remove ...