Naming an Event Dispatcher the Same as an Overridable Function Corrupts the Event Dispatcher

UE - Gameplay - Blueprint - Oct 21, 2015

Creating an event dispatcher in a widget blueprint with the name OnDrop, which is already an existing overridable function, causes the event dispatcher to become corrupted and prevents it from being ...

Crash rendering image sequence if the Sub-Level with matinee is not loaded

Tools - Apr 15, 2016

Crash rendering image sequence if the Sub-Level containing the matinee is not loaded. This seems to go away if the level is either set to "Always Loaded". Seems to be a result of people not switch ...

Array OnRep Notification Not Running on Server

UE - Networking - Nov 30, 2016

Array variables marked as RepNotify are not calling OnRep on the server when they are not directly set using a Set 'VariableName' node. Found in 4.14.0 CL# 3195953 Reproduced in 4.13.2 CL# 317229 ...

Emissive Input required for Landscape Painting to Appear Correctly when using Emissive Color and Make Material Attributes property Enabled

UE - LD & Modeling - Terrain - Landscape - May 1, 2017

When using the Make Material Attributes and landscape layer blends, if an Emissive input is being utilized on any one layer, the other layers must also utilize the emissive input in order for it to ...

Comments on Blueprint Interfaces can´t be moved/deleted

UE - Gameplay - Blueprint Editor - Apr 1, 2019

When a comment box is added in a Interface blueprint, it cannot be moved or deleted. ...

HTML5 not pulling all data from BaseHTMLDeviceProfiles.ini

UE - Platform - Mobile - Nov 14, 2019

4.24 platform extension isn't properly pulling the device profile data from the engine. Or at least, it isn't populating it in the Device Profiles editor windows. [Link Removed] There should be a ...

Blank project do not show steamvr motion controller and is not working.

UE - Platform - XR - Dec 18, 2019

VR template in 4.24 binary engine works but not with blank project + steam guide setup. And, migrated working project from 4.23 also leads to same issue. working set(vr template) seems to have cor ...

UIScaleCurve float-point value in BaseEngine.ini lacks precision

UE - Editor - UI Systems - Slate - Jun 4, 2020

The screenshots below display 1920x1080pixel widget button. First one with Default DPIScaleCurve shows extra borders on the right and bottom. Next one with more precision shows no extra boundary. [ ...

Performance will drop in PIE if simulate physics is toggled rapidly on an actor with attached components

UE - Gameplay - Nov 3, 2015

Performance will drop in PIE if simulate physics is toggled rapidly on an actor with attached components User Description: Simulating physics for Primitive components causes severe performance dr ...

Editor windows do not lose focus when minimized on Linux

UE - Platform - Linux - Jul 28, 2015

Using Ubuntu 15.04, editor windows do not layer correctly when minimized. Control remains with the minimized window. Ex. After minimizing a blueprint window, right clicking will still act as thoug ...