Engine Crashes When Converting an Int to Float For a Map Key In Blueprints

UE - Gameplay - Blueprint Editor - Dec 11, 2019

The engine crashes when trying to automatically create a type conversion node when they are used a key for a map. Found in 4.24 CL#10570792 Reproduced in 4.25 Main CL# 10646676 ...

Widget With Spinbox Crashes When Destrcutor Is Called With Multithreaded Destruction Enabled

UE - Foundation - Core - UObject - Feb 28, 2020

When a widget with a spinbox is calls it's Destructor with "Multithreaded Destruction" enabled the engine crashes. I have tested in 4.23.1, 4.24.3, and 4.26 Main with "Multithreaded Destruction" dis ...

Actor Sequence Component doesn't work when actor is spawned in runtime

UE - Anim - Sequencer - Jan 27, 2021

It works in the PIE and standalone mode. But after packing the build, the animation won't start in runtime. ...

Crash occurs when typing 'Debug Crash' in console

UE - QA - Training - Feb 10, 2022

Once UE is launched and console is accessed, typing down 'Debug Crash' will close the engine and open the Crash Reporter window. 'Debug Crash' is not a recognized command from the list.REGRESION: No ...

[MetaSounds] - Browse to Asset button on Wave Player Node does not work

UE - Audio - MetaSounds - Sep 21, 2021

Selecting the Browse button on a Wave Player asset does not load the location of the selected asset for previously saved MetaSounds. Changing the Wave Asset to another Sound Wave and then selecting ...

Lumen screen traces from hair cast noising moving shadows on faces

UE - Graphics Features - Lumen - May 17, 2024

There is moving blotchy noise on the head and face from hair when Lumen HZB tracing hits hair.  CL 33258050 fixes the noise in the hair, but tracing still hits hair when it starts from surfaces like ...

In editor, custom primitive data dont work on instance static meshes in bp instance

UE - Framework - Components - Jun 25, 2024

Changes to custom primitive data properties for instanced meshes placed in the editor work in-game but are not otherwise reflected in-editor. ...

Is there a particle smoke that matches the world lighting 100%?

UE - Niagara - Oct 14, 2024

Niagara particle sprites with a Translucent Material are glowing in a completely dark area. This issue is also observed with the deprecated Cascade particles. Particle brightness is also dependent ...

LevelSequence Editor consumes input, even if the user last focused the Level Viewport

UE - Anim - Sequencer - Nov 27, 2024

LevelSequenceEditor has input priority over the Level viewport and other editor modules even though the Level viewport has been the last one selected. An example would be a cut operation. If you ha ...