Client lag/hitch detection can cause server to tick character faster than expected

UE - Gameplay - Player Movement - May 3, 2016

If client takes a long time to send a move to the server, the server erroneously ticks it for a large time without updating the client's timestamp, causing the server to move the client further than ...

Inifinite loop in tick task manager with tick when paused and interval

UE - Gameplay - Sep 16, 2016

When processing tick when paused tick interval tick functions an infinite loop can occur. ...

Timer does not update in Vehicle Game

Docs - Samples - Oct 5, 2016

When trying to test Vehicle game, the counter did not increase as time elapsed. This prevents being able to test if the lap function is working. Tested in 4.13.2 CL 3145013 and it was working. Thi ...

Reimport Skeletal Mesh break Morph Targets if you have Active Reduction on base LOD

UE - Editor - Content Pipeline - Import and Export - Aug 27, 2019

Editor preview safe zones for notched iPhones do not match those used at runtime

UE - Platform - Apple - Dec 4, 2020

Hi, on iOS we ask the device for its cutout regions, but the values returned by the device can be overridden using the SafeZone.Landscape.* cvars. However these are on-device only settings. When th ...

Reparenting an actor BP to EditorUtilityActor does not give access to editor utility nodes

UE - Framework - Blueprint Editor - Jul 11, 2022

Ran into this while answering a UDN. A user was expecting to find the blueprint functions available to Editor Utility Blueprints after reparenting their actor to EditorUtilityActor. I confirmed that ...

Allow users to keep files they have submitted themselves and still sync forwards

UE - Foundation - UGS - Mar 30, 2023

UGS displays a prompt if syncing to latest would sync back before changes the user submitted themselves. It would be nice to allow them to keep their own files at least. ...

Recent change to Material Expression code missing a case for "exp2" function in switch (cpp)

UE - Editor - Content Pipeline - Datasmith - Mar 4, 2024

The function "FMaterialDerivativeAutogen::GetFunc1ReturnType(...)" does not have a case for "EFunc1::Exp2". Also found in Release-5.4, CL: 331987674 ...

Decals in ISR have issues related to depth

UE - Platform - XR - Oct 11, 2024

See additional info URL: Decals have oddities in how depth is perceived. It seems we're sampling the left eye depth for the right eye. Decals in ISR are drawn view-by-view rather than being instance ...

Child class references are not shown after restarting the editor

UE - Gameplay - Blueprint - Oct 27, 2017

Child class references are not shown after restarting the editor. However, the other reference will show up if the child blueprint is currently open. ...