Color picker does not change the color of a Vector Parameter in a Material Instance until the mouse button is released

UE - Graphics Features - Mar 11, 2020

This is a regression from 4.23.1 (CL-9631420). The color picker does not update in realtime anymore when holding down the left-mouse button. Only on mouse-release does it update. This was reported ...

Crash clicking on the Reload button in the Modules window

UE - Foundation - Core - Jun 5, 2017

Editor is crashing when clicking on the reload button within the modules window of the editor. This also occurs in 4.16 so not a regression. ...

Crash When deleting an animation state while it is open in other tab

OLD - Anim - Dec 18, 2018

When deleting a state in a state machine while the state is open in another tab the editor will crash ...

The Toggle Comment Bubble button for Reroute nodes does not revert the comment bubble to constant visibility

UE - Gameplay - Blueprint - Nov 21, 2015

The Toggle Comment Bubble button for Reroute nodes does not revert the comment bubble to constant visibility if the bubble is set to only appear when the node is hovered over. This does not occur w ...

Child rotation appears to change when parent is negatively scaled and the map is saved using "Save Current" button

UE - Gameplay - Components - Apr 13, 2017

Child rotation appears to change when parent is negatively scaled and the map is saved using "Save Current" button. If this is then followed up by re-opening the map, the user's asset will experienc ...

Crash deleting skeleton when it's being used in current level

OLD - Anim - Sep 6, 2016

Crash occurs when the user deletes a skeleton while it is being used in the current level. If the skeleton is not in the loaded level, the crash will not occur. ...

Renaming struct member disconnects blueprint pins

UE - Gameplay - Blueprint - Feb 8, 2017

Renaming struct member disconnects blueprint pins. This issue can disconnect all references to the struct, which can be frustrating if you have a lot of references No regression has been performed ...

FirstPersonHUD blueprint does not work when the "FirstPersonBP" folder is renamed

UE - Gameplay - Blueprint - Jul 22, 2015

If the FirstpersonBP folder is renamed for the first person project example the First Person HUD will no longer function. ...

Overriding blueprint function first in grandchild class then in child class renames grandchild function

UE - Gameplay - Blueprint - Nov 28, 2017

If you have a blueprint A with a child blueprint B, and child of the child blueprint C, overriding a function with a return parameter originally declared in blueprint A in the blueprint C, and then ...

"Build" button causes "Validation failed" and breaks references of meshes in Sublevel according to a prescribed procedure

UE - LD & Modeling - Modeling Tools - BSP - Feb 9, 2019

A licensee reported that "Build" button causes "Validation failed" and breaks meshes in a Sublevel according to a prescribed procedure. The process is quite complicated, but I can 100% reproduce thi ...