"Detaching from existing linker" error messages when running Fixup Redirectors commandlet

UE - World Creation - Worldbuilding Tools - OFPA - Aug 25, 2025

MRQ rendering crashes when there is an empty audio track

UE - Virtual Production - Tools - MRQ - Aug 25, 2025

Heterogeneous Volume Actor causes ensures to trigger in Debug builds

UE - Niagara - Aug 24, 2025

When a heterogeneous volume actor is used with a volume material in a debug build, the following ensures are triggered: Ensure condition failed: UniformBufferValue || EnumHasAnyFlags(AutomaticallyBo ...

UE 5.6 broke the Collaborative Viewer Template pawn's Mouse Look

UE - Gameplay - Aug 24, 2025

UE 5.6 broke the Collaborative Viewer Template pawn's Mouse Look. Creating a 5.6 project based on the Collaborative Viewer Template and Playing-In-Editor, we notice that the Mouse Look functionality ...

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 ...

[PCG] Create PCG Asset from Level crashes on loaded sub-level exports

UE - World Creation - Procedural Tools - PCG Workflow - Aug 21, 2025

PCG Level Asset export doesn't support exporting a level while it is loaded as a sub-level. We should warn the user instead of crashing. ...