5.3 crashes when loading a map with an actor that had the class of one of its components changed

UE - Gameplay - Components - Feb 1, 2024

Create a blueprint based on actor, give it a SceneComponent named ExampleComp (BP_TestActor) - this should be the blueprints only componentCreate a new level (TestMap), place an instance of the bluepr ...

Crash in WorldPartition when creating cyclic references in LevelInstances

UE - World Creation - Worldbuilding Tools - Level Instances - Feb 1, 2024

Liftoff caused by root motion may leave a Character in walking movement for customized project

UE - Gameplay - Player Movement - Jan 31, 2024

If a Character has active root motion while walking (animation root motion OR a Root Motion Source), and this root motion causes vertical motion that "lifts off", it's possible for the Character to ...

"StaticFindFirstObject: Ambiguous object name" on delegates with timelines in packed level actors

UE - World Creation - Worldbuilding Tools - Level Instances - Jan 31, 2024

WPO is incorrectly generated on materials using Material Attributes as input to Landscape Layer Blend node

UE - Rendering Architecture - Materials - Jan 31, 2024

This comes from this UDN : [Link Removed] It occurs with this setup :  [Image Removed] , where Set Material Attributes expressions act as inputs to the Landscape Layer Blend material expression. ...

Streaming Virtual Texture UDIN V Offsetting

UE - Editor - Content Pipeline - Import and Export - Jan 31, 2024

UDIN virtual textures appear to have row 0 (U coordinate [0 - 1) swapped to the other side of the texture vertically. ...

Keep Simulation Changes does not work for Actors that have replaced root component

UE - Gameplay - Components - Jan 31, 2024

RelativeLocation and RelativeRotation in the root component are collected in UActorComponent::AllUCSModifiedProperties, so copying simulation result is skipped in EditorUtilities::CopyActorPropertie ...

Based movement ticking dependency may be incorrect if standing on a part of a Child Actor

UE - Gameplay - Player Movement - Jan 31, 2024

When an actor has a Child Actor Component that's a valid moving base for a character to walk on, the ticking prerequisites are set against the Child Actor and not the root owning actor that actually ...