Replication issue with actors not being attached to sockets

UE - Networking - Jul 20, 2020

If the client received AttachSocketName before AttachParent, USceneComponent::AttachToComponent will be called while AttachParent may be null, resulting in the received socket name being lost. When ...

Get Mouse X and Y stops working when Show Mouse Cursor is enabled

UE - Editor - UI Systems - Slate - Mar 31, 2016

Get Mouse X and Y stops working when Show Mouse Cursor is enabled This did not happen in 4.10.4-2872498 User Description: hello im having a issue i believe its a bug. im making a city builder sty ...

Building lighting fails on Linux without Internet connection

UE - Platform - Linux - Jul 6, 2015

Attempting to build lighting will stay at 0% and eventually fail if there is not internet connection for the computer. ...

Incorrect relative location on client under certain attachment conditions

UE - Networking - Nov 30, 2021

An attached actor's relative location isn't correct on the client when the actor has its position changed to that of the parent actor before attaching with the "Keep World" location rule. On the cli ...

Foliage Lightmaps Are Incorrect When Using a Precomputed Lighting Scenario

UE - Graphics Features - Oct 2, 2018

Foliage lightmaps will not match properly to the lighting when using a lighting scenario. They will look normal if you select the Foliage tool but in PIE they will still be incorrect. Working as ex ...

Physics object bounces around erratically when interacting with moving/rotating object

UE - Simulation - Physics - Nov 20, 2017

Physics object bounces around erratically when interacting with moving/rotating object. In the test project you will see multiple instances; some will not behavior erratically but many will. The li ...

Once an actor channel is closed by NetCullDistance, root motion movement synchronization stops working

UE - Networking - Jul 12, 2021

Properties that uses DOREPLIFETIME_ACTIVE_OVERRIDE (ex. RepRootMotion ) will also skip replication when an actor channel is newly opened. This means that if the variables on the server side do not c ...

Building UE4 solution fails in Test configuration

UE - Foundation - Core - Nov 15, 2018

Attempting to build the full UE4 solution for the Test configuration fails in 4.21. Most projects will build successfully, but a few will fail with various errors. Most of the errors appear to be re ...

Cloud Presenter - Presentations with phasing may display all phases at once immediately after launch

TM - Tools - Oct 11, 2024

Some Presentations containing Phasing will display all phases simultaneously in the Twinmotion Cloud after the Presentation is launched. Issue is consistently reproducible for affected Presentati ...

LogRenderer errors produced when using the restore button in viewport

UE - Graphics Features - Jan 11, 2017

When using the restore button to obtain orthographic views of the scene the output log spits out several errors:LogRenderer:Error: No Color LUT texture to sample: output will be invalid. LogRendere ...