Changing project settings in the Editor can result in duplicate entries in the project's .ini files.

Tools - Dec 30, 2014

Changing the packaging settings for a project in the Editor results in double entries in the .ini file for the project. This seems to have worked fine in 4.5.1 (CL 2336109). Found broken in 4.6.1 ( ...

Some post processing features in Preview Scene Settings do not update immediately

UE - Gameplay - Jul 28, 2016

In Persona or the Static Mesh Editor, some post processing features do not update immediately when the user changes them. This was seen with Color Grading and Lens Flare settings. It could affect ...

Blueprint actor stops responding

UE - Gameplay - Blueprint - Apr 27, 2015

After changing the component to static, compiling and changing it back to movable and compiling, the BP actor will not move with the set actor location. I wasn't able to get the translate arrows to ...

Media player does not play audio or video on the Xbox One

Media Framework - Nov 18, 2016

Audio and video are not playing on Xbox One. This issue affects both MultiTrack and Single-Source media sources. Debug text output meant to display the audio / video track currently being played i ...

OnClick Events for buttons in 3D Widgets not firing in Multiplayer

UE - Editor - UI Systems - Mar 6, 2017

OnClick Events for buttons in 3D Widgets not firing in Multiplayer. This issue only affects the button component as other Widget components that used the Left mouse button function as expected Regr ...

'r.StaticMeshLODDistanceScale' doesn't effect 'show LODColoration'

UE - Graphics Features - Jun 21, 2017

'r.StaticMeshLODDistanceScale' doesn't effect 'show LODColoration'. It does effect the actual performance of the LOD in the level but the LOD Coloration doesn't reflect the change. Licensee Descrip ...

Restore State for Make MovieSceneSequencePlaybackSettings Not Resetting Sequencer State Appropriately

UE - Anim - Sequencer - Oct 3, 2017

Restore State should have an affect on sequencer. The animation snaps back to its starting point even when this option is not set if played in PIE. If you drag in the level sequence in the editor an ...

Can't set Event replication settings when delegate output pin is connected

UE - Gameplay - Blueprint Editor - Feb 19, 2018

User Reported Bug Replication Settings no longer editable after event delegate is connected. Doesn't seem to affect functionality, only UI. (replication settings stay as set before plugging delega ...

Curl Noise Force Not Applying to Niagara Emitter

UE - Niagara - Jul 30, 2018

Curl noise force will not affect a Niagara particle regardless of strength. Current work around is to disable then re-enable "apply forces" under "solve forces and velocity" Found in 4.20 CL# 4233 ...

Additives using Frame From This Animation as the Base Pose Type fail to retarget correctly

UE - Anim - Rigging - Retargeting - Feb 13, 2025

Additive animations that use a frame from their own sequence as a base pose are initially broken when retargeted.  Users have to refresh the properties that select the base pose in order to fix the ...