Using Blueprint Interface functions that take other Interfaces as parameters can cause the Editor to crash in PIE mode.

UE - Gameplay - Blueprint - Jan 20, 2015

If a Blueprint Interface function takes other Interfaces as parameters, and a circular dependency is present, the Editor will crash when the interface is called. CRASH REPORT: [Link Removed] CALLS ...

[CrashReport] Mac crash in FMinimalDummyForwardLightingResources

UE - Graphics Features - Jan 18, 2017

This is a frequent crash occurring in the 4.15 Preview. No other information is currently known. Regression? Yes - there is no evidence of this occurring in 4.14 ...

Crash in RecreateClothingActors() when using MasterPoseComponent

UE - Simulation - Physics - Character - Mar 27, 2019

As part of RecreateClothingActors(), the master pose component is not checked for a valid mesh and therefore when TransformComponent->GetComponentSpaceTransforms() is indexed into, crashes can occur ...

Crash when pressing enter after a shape has closed when using the Geometry editor

Tools - Sep 12, 2016

Closing a shape with the pen tool and then hitting enter will cause the editor to crash ...

Access Violation crash loading DDC when making Installed Build

UE - Foundation - Core - Jul 2, 2018

The RunUAT command crashes while loading DDC when making an Installed Build. ...

Changing Area Light Settings In Blueprint Causes Crash

OLD - Enterprise - Aug 27, 2018

Changing area light settings in blueprint will Cause a crash. Found in 4.20 CL# 4302132 and 4.21 CL# 4307852 Unable to test in 4.19 due to provided project being in 4.20 ...

Editor Crash when adding element to TMap with FIntVector key

UE - Gameplay - Blueprint - Mar 21, 2017

Declaring a TMap with an FIntVector key (ex: TMap<FIntVector, int32>) will cause the editor to crash when adding an element to the map. ...

Crash Occurs When Actors are Attached Across Persistent and Sublevels When Levels are Saved

UE - Anim - Sequencer - Dec 12, 2017

Can attach actors to each other through the use of sequencer even though actors are in different levels which leads to crashing when saving and changing levels F3DAttachTrackEditor::IsActorPickabl ...

Crash when opening and closing custom profiles and then closing UFE

UE - Platform - Console - UnrealFrontend - Sep 26, 2016

Semi sporadic crash is occurring when switching between profiles in UFE and then exiting out This could not be repro'd on a Win7 machine with and Nvidia 980, could not be repro'd on a Win10 machine ...

Closing editor after quitting a standalone game causes a crash.

UE - Editor - UI Systems - Jan 4, 2022

The editor will produce a crash most of the time when closing editor after quitting a standalone game. This is a regression due to it not occurring in 4.26. ...