The Blueprint compiler is not consistent with UHT when generating DefaultToInstanced variables

UE - Gameplay - Blueprint Compiler - Sep 7, 2023

UnrealHeaderTool and the Blueprint compiler generate inconsistent metadata for object reference variables whose underlying class type includes 'DefaultToInstanced' metadata. UnrealHeaderTool-genera ...

Cannot change collision presets in BP instances.

UE - Simulation - Physics - Aug 8, 2023

Even with the “Editable when Inherited” flag set in the blueprint class static mesh component, the BP instance collision preset cannot be set to one different from the BP class collision preset. The ...

The pak file specified in PakFileRules is not created correctly

UE - Foundation - Core - Aug 8, 2023

The rules by which chunks are created are ambiguous and currently do not ensure that both PakFileRules and PrimaryAssetLabel settings are reflected. In this sample, depending on the PrimaryAssetLabe ...

BP property initialization fast path does not handle non-instanced properties assigned to default subobjects correctly

UE - Gameplay - Blueprint - Jul 27, 2023

Non-instanced object ref properties are incorrectly being skipped at property initialization time when Blueprint class instances are spawned with the fast property initialization path enabled. This ...

NiagaraComponent attached to the character won't stay active when travelling to a new level using seamless travel

UE - Niagara - Jul 27, 2023

The pawn character is added to APlayerController::GetSeamlessTravelActorList, so it'll be persisted during server travel. The Niagara component is spawned during BeginPlay and activated manually. W ...

Navmesh does not update according to the volume, when an actor with a navigation volume tied to a parent is moved.

UE - AI - Navigation - Jul 14, 2023

When a NavmeshBoundsVolume or NavModifierVolume is parented to another actor in the outliner, navmesh is not updated along the volume when the parent actor is moved. If the volume is deleted and the ...

Delay when entering text into EditableText using Microsoft IME after switching between half-width and full-width characters

UE - Editor - UI Systems - UMG - Jul 14, 2023

When adding text after switching from half-width to full-width input using Microsoft IME, there may be a delay of about 3 seconds before the text can be entered correctly. This is supposed to occur ...

Gameplay effect modifier tag requirements are not checked for Instant/periodic effects

UE - Gameplay - Gameplay Ability System - Jun 19, 2023

When creating a GameplayEffect, modifiers can tag requirements for the Source and Target tags. For Duration gameplay effects, these tag requirements are checked from FAggregatorMod::UpdateQualifies ...

Toggle Folder Visibility Inconsistent in Scene Outliner With Search

UE - Editor - UX - Apr 20, 2023

In the scene outliner, if you add a folder with one visible actor in it, and filter out some of the actors, users are unable to toggle the visibility of the folder anymore, or they are only able to ...