Unreal Editor crash on Datasmith import with VrayBlend Materials

UE - Editor - Content Pipeline - Datasmith - Importer - Jun 16, 2020

It seems like VrayBlend materials are crashing the Engine when importing them with Datasmith. This is a regression from 4.24.3 (CL-11590370) where the file imported successfully. This was reported ...

Actors set to Spawnable are not trackable by a camera once they've spawned

UE - Anim - Sequencer - Jan 18, 2023

Tested in //UE5/Release-5.0 CL20979098 this is a regression. Attachment is of UE 5.0.3. Actors set to Spawnable are not trackable by a camera once they've spawned. The camera will track the actor w ...

Improper clipping in children of a retainer widget

UE - Editor - UI Systems - Slate - Jan 21, 2025

Children of retainer widgets have improper clipping, causing any widgets set to "Clip to Bounds" to clip incorrectly. This may also affect hit testing in cases where multiple retainer widgets are ne ...

Crash when copying PF_Stencil format from the GPU to the CPU

UE - Rendering Architecture - RHI - Oct 18, 2023

This is a crash related to copying depth-stencil render targets to the CPU. See linked UDN for more info. ...

[OPENGL]: Enable Subsurface Scattering

Tools - Jun 29, 2015

Subsurface scattering is disabled on all OpenGL platforms despite the shaders being properly translated & OpenGL platforms supporting the relevant CPU-side APIs. This also affected Metal for the WWD ...

The AnimBlueprint Shows Duplicate Objects in the Debug Filter

UE - Gameplay - Blueprint Editor - Sep 3, 2015

The AnimBlueprint shows duplicate characters in the Debug Filter causing three effects: 1. Causes breakpoints not to function properly 2. Reverts back to "No debug object selected" in the Filter rat ...

Attempting to apply instance changes to blueprint after altering a struct array crashes editor

UE - Gameplay - Blueprint - Dec 14, 2015

Editor crashes if a struct array that has been made editable is edited in an instance within the details pane of the level viewport, then the changes are applied from the instance to the base bluepr ...

Material Expression Reference Page: "Inputs" and "Outputs" definitions reversed from illustration

On the Material Expression Reference Page, located here:https://docs.unrealengine.com/latest/INT/Engine/Rendering/Materials/ExpressionReference/index.html Material Expressions has an image numbered ...

Drop down menus clip on 27" Screen iMacs

UE - Platform - Apple - Mar 17, 2017

Drop down menus clip on 27" Screen iMacs (See attached images.) Reported from a 27" iMac and tested on a 27" iMac here. Other models may be affected. *Image with Blue circled areas are from the use ...

Character Mesh Position Offset in Online Sessions

UE - Networking - Jun 12, 2017

If a client joins a session while the host is moving their character, the character's mesh will become offset on the client. Example Video: [Link Removed] Found in 4.16.1 and reproduced in 4.17 M ...