Copy-pasting an actor property that is a set of strings adds extra quotes and escapes

UE - Editor - Workflow Systems - Aug 24, 2025

Copy-pasting an actor property that is a set of strings adds extra quotes and escapes. The licensee has reported: The problem doesn't happen for example for properties of types set of integers, nor ...

Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected

UE - Rendering Architecture - Materials - Aug 24, 2025

Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected. The licensee noticed this in a ...

Adding pin to CR node causes crash if input variable is assigned to one of the array element

UE - Anim - Rigging - Control Rig - Aug 22, 2025

When a node has a variable assigned to one of its pins. You will get a crash every time you add a pin. I am sure this goes for all nodes with with the "add pin" functionality [Link Removed] ...

Slow editor/PIE loading of UWorldPartitionHLODSourceActorsFromCell

UE - World Creation - Worldbuilding Tools - World Partition - Aug 22, 2025

Loading UWorldPartitionHLODSourceActorsFromCell takes a lot of time in editor + PIE when it contains a lot of actors per UWorldPartitionHLODSourceActorsFromCell (between 2K and 2K actors). ...

GAS: GameplayAttribute picker incorrectly also lists AttributeSets' non-attribute properties

UE - Gameplay - Gameplay Ability System - Aug 21, 2025

Context: FGameplayAttribute's details customization lets designers pick any attribute property from any UAttributeSet class. Problem: This currently displays all properties of UAttributeSet class ...

Missing PSO Precaches in the engine

UE - Rendering Architecture - RHI - Aug 20, 2025

A licensee wanted to report some missing PSO Precaching they found, which they have fixed locally: 1. UCableComponent doesn't implement CollectPSOPrecacheData or call CheckPSOPrecachingAndBoostPri ...

Bake to Control Rig blueprint function does not work on tracks in nested sequences in Editor

UE - Anim - Sequencer - Aug 20, 2025

The Bake to Control Rig node only works with single-layered level sequences. Studios using a nested level sequence setup cannot use this function. [Link Removed] ...

Physics Mover: AI movement and collisions can cause sharp increase in velocity

UE - Gameplay - Player Movement - Mover - Aug 19, 2025

A pawn using the physics mover and using AI movement can sometimes gain an ton of velocity quickly upon colliding with another physics object. It seems to fix it self and revert back to it's origina ...

Sub-world partitions do not properly handle partial editor loading as world partition standalone level instances' spatially loaded actors do not get loaded even when the Level Instance is force loaded or loaded in by region.

UE - World Creation - Worldbuilding Tools - World Partition - Aug 19, 2025

Context Level Instancing is a level-based workflow designed to improve and streamline the level editing experience. In a standalone Level Behavior, when the Level Instance Actor is loaded through it ...