Setting a poseable mesh component as leader component for a skeletal mesh component causes an access violation.

UE - Anim - Runtime - Jun 11, 2024

When a skeletal mesh component's leader component is set to a poseable mesh component, the application will run into an access violation when it tries to update animation curves and morph targets. ...

Imported material is incorrectly tinted when imported via Interchange.

TM - Interoperability - Dec 13, 2023

Materials are correct in UE. It is not clear for me why the materials have tint. Possibly a remnant from the DCC. Sketchfab, UE, and Blender displays the materials cortrectly, without the blue tint. ...

Material not compiling due to WorldAlignedTexture connected to multiply

UE - Rendering Architecture - Materials - Jul 23, 2024

When a WorldAlignedTexture node is connected to multiply and then to a base color output, the material cannot be compiled, giving an error about an undeclared local variable "Local27". Does not happ ...

GAS: Initial OnRep_SpawnedAttributes from DefaultStartingData clears attribute values for already replicated ActiveGameplayEffects

UE - Gameplay - Gameplay Ability System - Oct 23, 2024

Context The property 'DefaultStartingData' in AbilitySystemComponent can be configured from blueprint to spawn default attribute sets. This happens OnRegister. For runtime spawned actors like pawns ...

Decals in ISR have issues related to depth

UE - Platform - XR - Oct 11, 2024

See additional info URL: Decals have oddities in how depth is perceived. It seems we're sampling the left eye depth for the right eye. Decals in ISR are drawn view-by-view rather than being instance ...

Crash when importing some .skp files on MacOS

TM - Interoperability - Mar 10, 2025

SketchUp UV scale is not consistent for Datasmith imports.

TM - Interoperability - Dec 6, 2024

This is not a regression.  We have 2 issues here.  First we have different tiling for the different materials, since the way sketchup handles texture scale. They scale the UVs of the object instead ...

Object Tracks in SubSequencer Lose References When Blending is Enabled

UE - Anim - Sequencer - Apr 4, 2025

We're encountering an issue when using object tracks in subsequencer. When enabling blending on a subsequencer section, the object reference resets throughout the entire duration of the track. Inte ...

Texture incorrectly set when importing glTF via Interchange.

UE - Editor - Content Pipeline - Import and Export - May 6, 2025

Some Materials in this glTF model will not use the correct texture on import.  Find interior doors. They will be Green when they should be set to use Wood_Basecolor texture and not Wood_Basecolor1 ...

Enabling Substrate causes MaterialGraph node previews to render black

UE - Graphics Features - Substrate - Jul 16, 2025

Node previews in MaterialGraph with Substrate enabled render solid black in 5.6. The latest 5.5 engine does render previews correct with substrate enabled. ...