Crash due to D3D device being lost. (Error: 0x887A0006 - 'HUNG')

UE - Graphics Features - Feb 22, 2017

This JIRA has been made to consolidate all "D3D device being lost. (Error: 0x887A0006 - 'HUNG')" crashes into one. Previous Jira tickets include:[Link Removed][Link Removed][Link Removed][Link Remo ...

iOS CloudKit Crash

UE - Platform - Mobile - Dec 12, 2019

iOS app crashes when cloudsaves are active When attempting to deploy with 4.25 MAIN @ CL 10668484 it fails with error LogPlayLevel: === BUILD TARGET AJ_ioscloudsave OF PROJECT AJ_ioscloudsave WI ...

Add Chunks button in asset audit tool does not function because of name compare problem

UE - Editor - Content Pipeline - Content Browser - Aug 5, 2020

The Asset Audit window uses the content browser to display information about both real assets and fake assets like chunk definitions. When you hit the Add Chunks button, it adds several fake assets ...

Components tree is ending up with duplicate entries (same pointer added to the list view more than once), causing an assert

UE - Gameplay - Blueprint Editor - Jul 19, 2017

This is a common crash affecting users in 4.15 and 4.16. Over 200 unique users have been affected. User DescriptionsCamera Component Drag Drop Error 카메라 컴포넌트를 이벤트 그래프에 드래그 하는 도중 에러 발생 Creating a ne ...

Composure DepthElement Not Producing A Picture

zComponent - Archive - Sep 21, 2020

The user tried to use the composure pipeline and followed what is written in the Documentation. All the elements and nodes written out in the documentation worked as expected with the exception of t ...

Light Function and Post Process domain material thumbnails show the default material

UE - Rendering - Architecture - Materials - Sep 25, 2026

Since 5.8, materials whose Material Domain is Light Function or Post Process no longer preview correctly in the editor. They render as the default material (WorldGridMaterial) instead of the materia ...

DDC corruption creates incorrect pasted topology when using Landscape Copy / Paste Tool

UE - LD & Modeling - Terrain - Landscape - Apr 3, 2017

I noticed that the copy and pasted section of the level was being painted while I was painting a nearby section of the level. This weird yellow color appeared and I undid and redid the paint to make ...

FBX Import - Morph target normals not correctly applied when imported as LOD 0

UE - Editor - Open File Formats - FBX - Nov 27, 2025

This is a regression since 5.5 with skeletal meshes where morph target normal/tangent deformation only works when a mesh is imported as a LOD of an existing skeletal mesh, but not when imported as L ...

Control Rig parameters don't function in the AnimBP after the Editor restarts

UE - Anim - Rigging - Control Rig - Jun 14, 2020

Control Rig parameters don't function after editor restarts. Also the default values don't function and you need to use an input instead of directly editing the values of the pins. You can work aro ...

Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use

UE - Rendering - Features - Sep 30, 2024

Primarily visible at very low internal resolutions (25-33%), the SSS checkerboard with an RGB scene colour format (r.SceneColorFormat 3) causes a double-image artefact both internally and on the sil ...