Multi-process cooking does not complete in UE5.3.0

UE - Foundation - Data Pipeline - Cooker - Sep 26, 2023

Projects with multi-process cooking enabled will not complete packaging. If MPCook is disabled, packaging can be completed.  ...

[Interchange - glTF] Incorrect results when importing a GLB with skeletal animation

UE - Editor - Content Pipeline - Import and Export - Sep 25, 2023

Control rig functions can't be accessed from other control rigs after save on compile

UE - Anim - Rigging - Control Rig - Sep 25, 2023

It looks like there is an issue with control rig functions and the save on compile option.  When a control rig is saved via this setting, public functions within the control rig can't be referenced ...

Lyra - Grant Nearby Interaction Ability Task used as source object but doesn't replicate

UE - Gameplay - Gameplay Ability System - Sep 25, 2023

UAbilityTask_GrantNearbyInteraction passes itself as the source object when making the Interaction Ability Spec in UAbilityTask_GrantNearbyInteraction::QueryInteractables. This causes the "Warning: ...

Collision between physicalized actors and instanced static meshes produce warnings.

UE - Simulation - Physics - Sep 25, 2023

Collision between an instanced static mesh and a physics simulating actor (with "simulation generates hits events" enabled) results in the following warning: LogChaos: Warning: Collision handler en ...

'GetClassDefaults' Can Cause Blueprint To Become Modified When Unrelated Blueprint Is Compiled

UE - Gameplay - Blueprint - Sep 22, 2023

The stems from a really old change (CL 2948683) to fix [Link Removed]. Compiling ObjectA will call RefreshExternalBlueprintDependencyNodes on its dependent BP,  ObjectB_ReferencesA, which reconstru ...

Paper2D crashes on flipbooks with dynamic materials

UE - Gameplay - Paper2D - Sep 22, 2023

Having flipbooks with dynamic materials and then playing/stopping multiple times crashes the editor. ...

Crash when deleting BindingOverrides if the target property is left open on the details panel

UE - Anim - Sequencer - Sep 22, 2023

Crash if opening ALevelSequenceActor::BindingOverrides in the details panel and run a process that empties the BindingOverrides elements. Workaround: FMovieSceneObjectBindingID FMovieSceneObjectBi ...