Deleting static mesh that is used by foliage tool in content browser then selecting foliage window crashes editor

UE - World Creation - Worldbuilding Tools - Foliage - May 11, 2015

If a static mesh is being used by the foliage tool and then deleted in the content browser, the foliage tool will retain a copy of the object and crash the editor if the foliage window is selected a ...

A crash can occur when multiple Actors are spawned/destroyed simultaneously with each one loading an asset.

UE - Foundation - Core - Jan 6, 2017

A crash can occur if multiple Actors are spawned/destroyed simultaneously, with each Actor loading an asset when it is spawned. This does not occur 100% of the time, but it does occur quite frequent ...

Editor crashes when opening a project that includes a plugin with more than two custom Volume classes

Tools - Jun 7, 2017

Adding more than two custom Volume classes to a plugin results in any project that includes that plugin crashing when opening it in the Editor. There does not appear to be a problem with adding thre ...

Setting Fullscreen Mode to "Fullscreen" results in Crash when using 4.23 from source

UE - Rendering Architecture - RHI - Oct 11, 2019

Changing the screen settings to Fullscreen through code or blueprints results in a crash. This only happens in the source version of 4.23 and does not occur in the binary version of 4.23. I have att ...

Crash when using STOP button to exit PIE when removing a widget from viewport via Event Destruct

UE - Editor - UI Systems - Sep 8, 2016

Editor crashes when removing a widget from the viewport via Event Destruct. This appears to happen when using the Stop button during PIE ...

Regression for UPROPERTY specifier causing crash ("Template Mismatch during attachment") during PIE

UE - Foundation - Core - Jun 19, 2015

If the UPROPERTY() specifier "VisibleDefaultsOnly" or "EditDefaultsOnly" is used on a component reference that is attached to the root component selecting the actor with this component in the world ...

Opening or Creating a Material with SubSurface Profile will Crash Editor with LPV enabled

UE - Graphics Features - Dec 22, 2014

After enabling Light Propagation Volumes with the console variable r.LightPropogationVolume=1, opening or creating a material with the subsurface profile model will crash the editor. Broken in 4.6. ...

Crash when changing the name of a variable within in a struct that's being used by a Control Rig Blueprint

UE - Anim - Rigging - Control Rig - Nov 23, 2021

It seems that changing the name of a variable inside a struct that is being used by a Control Rig variable causes a crash. Additionally, after making the change and recompiling the Control Rig bluep ...

Client crashes when executing seamless travel with an active particle system in the level that was spawned at runtime

UE - Niagara - Apr 16, 2019

Clients crash when being part of a Seamless Travel if there was an active particle system in the level that was spawned at runtime. If the travel is not seamless, the particle system is placed in th ...

Adding OnClicked to SButton in Editor Mode plugin crashes editor when accessing the plugin

UE - Foundation - Cpp Tools - Plugin System - Mar 16, 2016

If a new editor plugin has a button added with OnClicked functionality, the editor will crash immediately when accessing the plugin. Removing the OnClicked portion of code allows the plugin to be a ...