Editor Crashes when importing some FBXs with multiple Material IDs in 4.14.2

UE - Editor - Content Pipeline - Import and Export - Jan 5, 2017

This is a regression in behavior between 4.14.1 and 4.14.2! The editor will crash when importing FBX meshes that have multiple material ID assignments. If it's a single material ID it will import w ...

3D widgets not clickable by Client 2 in multiplayer

UE - Editor - UI Systems - Dec 8, 2014

When using a 3D widget the user cannot click on buttons when on the client 2 of a multiplayer game. ...

Hardware Accelerated Video Decoding with DirectX 11 causes videos to render black when loaded in a Media Player

Media Framework - Sep 7, 2023

This is not a regression. Tested in //UE5/Release-5.2 CL26001984. Hardware Accelerated Video Decoding requires DirectX 11, but it appears the combination causes media players to only render a black ...

Weird results in lightmaps after update to 4.21.2

UE - Graphics Features - Feb 4, 2019

Reported by our licensee Gungho. Reproduced in 4.21.2, win10 ...

Running PIE with a dedicated server with 2 or more clients will clear undo buffer

Tools - Apr 29, 2016

The user can no longer undo in the editor after running a dedicated server with 2 or more players ...

Updating C++ projects with Marketplace plugins in 4.25.2 fails to build project

UE - Foundation - Cpp Tools - Plugin System - Jul 24, 2020

Projects created in previous engine versions fail to build in 4.25.2Running D:/Epic Games/UE_4.25/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Win64 -Project="D:/Unreal Projects/MyProject4 ...

With Accurate Velocities from Vertex Deformation and Instanced Stereo enabled anti-aliasing does not affect the right eye

UE - Platform - XR - Jul 8, 2016

KevinR: Make sure you are using Temporal AA (TXAA), and I was using SteamVR/Vive With Accurate Velocities from Vertex Deformation and Instanced Stereo enabled anti-aliasing does not affect the righ ...

C++ Projects Crash in Mac OS 10.11 El Capitan when No Audio Device is Present

UE - Platform - Apple - Dec 22, 2015

This issue has been reported by two different users with very similar circumstances: Both report the editor freezing when trying to compile UE4.10 C++ Projects running Mac OSX 10.11.1 if no audio i ...

SkyLight is not affecting the volumetric fog

UE - Graphics Features - Lumen - Nov 24, 2022

Looks like this behavior was working as expected until 5.1 Preview 2 ...

Connections Expand When Using Layered Blend Per Bone Node With Blend Weight Over 2

OLD - Anim - May 9, 2018

When changing to the Blend Weight to a number greater than 2 the connections between nodes starter to blur in the anim graph. Connections become ever more distorted when zooming out of anim graph. ...