Editor crashes when attempting to play a recorded demo - Assertion failed: IsGameWorld() && GetCurrentLevel()

UE - Networking - Oct 9, 2018

Editor crashes when attempting to play a recorded demo - Assertion failed: IsGameWorld() && GetCurrentLevel() This issue occurs when using a template project or QAGame. This does not occur when usi ...

Switcher widget causes a crash when dragging a widget out of it and on to the canvas panel

UE - Editor - UI Systems - Aug 6, 2015

If the user adds two widgets to a switcher and then tries to drag one out of it the editor will crash ...

Crash when calling SetVector2DParameter on a Niagara Parameter Collection

UE - Niagara - Mar 10, 2022

Crash when calling SetVector2DParameter on a Niagara Parameter Collection. The value for the SetVector2DParameter may or may not have to be changed in order for the crash to occur.  Assertion faile ...

Launch on fails during staging with a SafeCopyFile Exception for MfMedia.uplugin

Tools - Jan 10, 2017

Was able to repro this on machines with and without machines set up for Xbone testing. ...

Subway Sequencer crashes when opening shot0010_001

UE - Anim - Sequencer - Dec 13, 2019

Opening specific files inside of the "Sequencer" doc sample project results in engine crash. ...

[Sound Cue][Open World] - Crash when creating a Sound cue from an Ambient Sound actor on an Open World map

UE - World Creation - Worldbuilding Tools - OFPA - Apr 18, 2022

When trying to recreate an issue that resulted in [Link Removed], I came across this call stack.   Regression testing done in //UE4/Release-4.27.2 CL-18427296 and this issue did NOT happen. ...

Adding an actor with a default property track immediately after opening a sequence will crash the editor

UE - Anim - Sequencer - Aug 14, 2020

If an actor has default property tracks set up in the Project Settings, adding that actor to a level sequence through C++ will crash the editor. This seems to stem from the creation of the default p ...

Crash occurs in UMG Animation after pressing "Home" key and RMB the timeline

UE - Anim - Sequencer - Oct 17, 2016

This was able to be reproduced 100%. I encountered this during a Regression pass. I was trying to give myself more working space and remembered that hitting "Home" focused the space in sequencer, so ...

Lyra: Check triggered when changing the "Entry Widget Class" property on W_SettingsPanel

UE - Content - Sample - May 2, 2022

Looks like we are hitting a check when you try and change the default widget class for this.  ...

Exiting PIE after ejecting from pawn and opening a level sequence will crash the editor

UE - Editor - Workflow Systems - Oct 26, 2023

Editor crashes after ejecting from pawn and opening a sequence when ending PIE ...