Copy/pasting a Custom Event that has input names containing spaces will create a Custom Event with extra inputs

UE - Gameplay - Blueprint - Feb 4, 2015

Copy/pasting a Custom Event that has input names containing spaces will create a Custom Event with extra inputs. It appears that an input name with a space in it will be copied as two inputs, the fi ...

[VR] Camera attached to non-root scene component in BP will sink into floor after Reset to Floor Origin

UE - Platform - XR - Aug 12, 2016

When a project is first created following the Setting up UE4 to work with SteamVR docs, the Vive camera works correctly and will display at the correct height. However, if at any point during develo ...

Static light contained in a blueprint will need lighting rebuilt each time the project is reopened

UE - Gameplay - Jun 29, 2017

Static light contained in a blueprint will need lighting rebuilt each time the project is reopened. This only seems to occur for a static light that is parented to a static mesh and then that static ...

Reimport for a single FBX with multiple meshes will add all mesh pieces instead of the single mesh.

Tools - Nov 21, 2016

When using a single FBX with multiple meshes that is imported as individual meshes, if you reimport after updating only a single mesh or a few of them the entirety of FBX will be imported and added ...

If a widget is set to be the parent of another widget and that widgets child is added to its designer tab, opening one of those widgets will cause a crash

UE - Editor - UI Systems - Nov 1, 2016

If a widget is set to be the parent of another widget and that widgets child is added to its designer tab, opening one of those widgets will cause a crash ...

Inconsistent behavior with spawned actors when Play, Pause, and Stop are called in a Level Sequence Player

UE - Anim - Sequencer - Feb 15, 2017

This is a report about three different issues that are tightly related to each other, so I decided to include them in a single report. The behavior of actors spawned by a Level Sequence Player is no ...

Array inputs in Blueprint Interface results in compiler note- "No value will be returned by reference. Parameter 'NewParam'. Node:"

UE - Gameplay - Blueprint - Sep 8, 2017

Array inputs in Blueprint Interface results in compiler note- "No value will be returned by reference. Parameter 'NewParam'. Node:" Bug reproduced in 4.16, 4.17, and 4.18 ...

Making a Movie Scene Section Parameters struct in Blueprints will use the incorrect Can Loop values

UE - Gameplay - Blueprint - Jul 26, 2021

Can Loop is the edit condition for two other values in the struct, and those will have values by default when the node is created, so Can Loop will be true in the make struct node.  You can work ar ...

BuildId in the UE4Editor.version file for a local binary build will sometimes be updated when a hot reload is performed

UE - Foundation - Core - Feb 10, 2018

Performing a hot reload on a project that is using a local binary build of the Engine will sometimes result in the Engine's UE4Editor.version file being updated with a new BuildId value. That result ...

If user changes the Sprites name template, they will have to click the Extract button twice

UE - Gameplay - Paper2D - Aug 4, 2015

In the Extract Sprites window, if the user changes the Naming Template, they will have to click on the Extract button twice for the sprites to extract. ...