Blueprint Actor cannot delete implemented interface when Interface is converted to an Event.

UE - Gameplay - Blueprint - Dec 11, 2019

In Editor, When you remove a return value parameter from a Blueprint Interface function's Output Category. (so there are no return values), it becomes an event. In any Blueprint that implements the ...

console "stat" commands function properly but report command as not recognized

Tools - Jan 9, 2015

A number of "stat commands" such as "stat memory" or "stat collision" are working when used but display the message "Command not recognized: stat memory" when entered. ...

Audio playback does not function when streaming video with the media player asset

UE - Foundation - Cpp Tools - Plugin System - Jun 22, 2015

Video streamed through the media player asset is not accompanied by audio. The issue occurs for all supported video formats. Currently this has only been tested with streaming via URL due to [Link R ...

LIVE: ProjectileMovement component does not function when a PrimitiveComponent is missing or removed from the Components

UE - Simulation - Physics - Nov 18, 2014

A projectile brought over from 4.5.1 or earlier that does not have a Primitive Component as the Root, or removing the root from the projectile in 4.6, returns an error: "Movement component [Projecti ...

Race condition in USkeletalMeshComponent::TickCloth due to delayable tick function.

UE - Simulation - Physics - Character - Aug 1, 2016

USkeletalMeshComponent::TickComponent is run in the PrePhysics tick group. This is the only place where the SkeletalMesh is actually checked to be != nullptr to determine whether or not the TickClot ...

On Mac OSX Open Asset (Command + P) Does not function as Expected

UE - Platform - Apple - May 5, 2016

On a Mac running either Yosemite or El Capitan, when you go to open an asset either through the menu: File>Open Asset or Command + P, when the pop-up window appears and you start typing, the window ...

Ray Traced Translucency Option Doesn't Function in Post Process Volume

UE - Graphics Features - Lumen - Aug 16, 2019

Ray Traced Translucency Option Doesn't Work in Post Process Volume. Found in 4.23 Preview 6 CL# 7848402, and 4.24 CL# 8074192 Working as expected in 4.22 CL# 7053642 This is a regression. ...

Crash on multi viewport when streaming in sub level with rect lights

UE - Rendering Architecture - RHI - May 13, 2021

"Windows Principal functionality is not supported on this platform" when packaging for iOS on Mac

UE - Platform - Mobile - Jun 7, 2022

Thread here: https://github.com/dotnet/standard/issues/1279 ...