Using the Editor in Fullscreen mode on Linux causes it to freeze and occasionally lock up the computer

UE - Platform - Linux - May 29, 2019

Using the Editor in Fullscreen mode on Linux causes it to freeze and occasionally lock up the computer. This freeze causes the various symptoms described in the Results field. In 4.21.2 (CL-4753647) ...

Disconnecting root node in behavior tree editor has no effect

UE - AI - BehaviorTree - Aug 27, 2020

I was testing some behavior tree content and wanted to temporarily disable a behavior tree entirely. So, I disconnected the root node from the selector node below it and expected that to disable the ...

Incremental Cooks: Add dependencies on files loaded during Load/Save of the package

UE - Foundation - Data Pipeline - Cooker - Oct 19, 2022

Iterative and Incremental cooking are supposed to recook packages when their "inputs" change. Most of the time inputs are the package file itself and the other package files on which it has dependen ...

Mesh Space Additive behave differently for non-animated bones and extra bones on a target skeleton

UE - Anim - Runtime - Dec 6, 2023

Typically, non-animated bones behave the same way as extra bones on a target skeleton. However, it appears that this isn't the case for mesh space additive sequences. When a bone is present on th ...

Setting blueprint name as a copied blueprint node crashes editor

UE - Editor - UI Systems - Slate - Jun 1, 2016

Setting blueprint name as a copied blueprint node crashes editor Frequency 5/5 Crashreporter [Link Removed] Regression (no) issue (does) occur in 4.10.4 ...

Editor Crash when custom Enum is used as Set or Map container type

UE - Foundation - Core - Mar 14, 2017

Making a blueprint variable a container (a Set or a Map with the Variable's "Pin Type" set to a custom Enum) and restarting the editor causes the editor to crash when opening the blueprint. Note: O ...

Crash when splitting a UDS pin on a collapsed graph

UE - Gameplay - Blueprint - Jan 27, 2017

I came across this bug while attempting to verify UE-41073. That bug is verified, but I accidentally added the struct into the collapsed node without going into the collapsed graph and split the col ...

Android Crash on app launch if AdditionalPluginDirectories contains wildcards in path

UE - Platform - Mobile - Jun 23, 2017

Having wildcards in the path for AdditionalPluginDirectories causes apps on Android to crash on launch. When testing this on iOS, the app did not crash but froze at the splash screen instead. Androi ...

DynamicMeshBuilder.cpp does not add a value to the InTangentY variable in the AddVertex function

UE - Graphics Features - Mar 4, 2021

This was found as a result of Licensees doing a Code Review of the Engine code. Here's the code snippet in question. It seems to be missing a line similar to Vertex->TangentY = InTangentY;.:  int32 ...

Crash when changing the World Grid Material to Unlit

UE - Graphics Features - Mar 13, 2017

A crash occurs when setting the WorldGridMaterial from the Engine Content to the Unlit Shading Model and pressing apply. ...