Merge Actors Tool Simplifies Nanite Meshes

UE - World Creation - Worldbuilding Tools - Merge Actor - May 19, 2023

Tried every combination of LOD Selection Type, Nanite enanbled/disabled, the only way it would seem to get the full number of triangles from the source mesh into the merged mesh is to disable Nanite ...

ImportAssetsAutomated with CSV Factory Does Not Work with FText

UE - Editor - Content Pipeline - May 18, 2023

When importing a CSV into a data table using AssetToolsModule with a file containing an FText, the resulting FText value is invalid. As a note, there are no issues when importing an FGuid, a FString ...

Deferred spawned actors can receive BeginPlay before they are finished spawning

UE - Gameplay - May 18, 2023

Actors that are deferred spawned on BeginPlay can be added to the world while AWorldSettings::NotifyBeginPlay is still iterating the world's actors and dispatching BeginPlay. AActor::DispatchBeginPl ...

GameInstance and subsystem initialization order is incorrect for Play In Editor

UE - Gameplay - May 18, 2023

The order of world and game instance initialization is different between a true standalone game (cooked game or an editor build with -game) and a Play In Editor game. Specifically, in Play in Editor ...

Performance concerns with control rig component initialization

UE - Anim - Rigging - Control Rig - May 18, 2023

Report from a licensee that InitializeControlRigComponent using CR_Frame_Destructible in city sample is taking a lot of frame time.  It seems that a lot of time is being spent hashing and also URigV ...

Sampling UV1 on a Nanite mesh with one UV channel returns a constant value

UE - Rendering Architecture - May 17, 2023

This is general for any UV channel past what the static mesh has, rather than specifically for UV channel 1. ...

Meta “AllowClasses” doesn’t filter in TArray using class

UE - Editor - Workflow Systems - May 17, 2023

This occurred when we use a class and variable TSubclassOf<UObject>, TObjectPtr<UClass>, TSoftClassPtr<UObject>. [Image Removed] ...

Push-model blueprint array property not properly marked dirty if modified by different actor

UE - Gameplay - May 17, 2023

In KismetArrayLibrary.h, functions that modify the array property call MARK_PROPERTY_DIRTY(Stack.Object, ArrayProperty). Because these calls use the stack object and not the property's owner, modify ...

Instanced properties do not update in actors placed in a level that is not currently open

UE - Gameplay - Blueprint - May 17, 2023

The user is specifically having a problem with TArray<TObjectPtr<>> however I have also reproduced this error using a single TObjectPtr<>, raw uobject pointers & all three previous methods within a ...

Raytraced Shadows render incorrectly in a project that has been converted from 5.0.3 to 5.1.1 to 5.2

UE - Graphics Features - Ray Tracing - May 16, 2023

Version to VersionResultsNew 5.0.3 project to 5.1.1Works as ExpectedNew 5.1.1 project to 5.2Works as ExpectedNew 5.0.3 project to 5.1.1 to 5.2Bug OccursNew 5.0.3 project to 5.2 Bug Occurs The scene ...