Ensure breaking a link in anim blueprint Event Graph and then undoing

UE - Gameplay - Blueprint Editor - Jul 18, 2016

Ensure occurs when the user breaks a link in the animation blueprint's Event Graph and then undo's the action. I wasn't able to reproduce it in a class blueprint. ...

[CrashReport] Crash on Mac during cook - UEditorEngine::UpdateAutoLoadProject()

UE - Platform - Apple - Jun 6, 2017

This is a top crash on Mac. This crash has only occurred on the 4.16.1 release (there are no records of it in 4.16.0). Repro steps are currently unknown, but the crash occurs in Commandlet mode and ...

[CrashReport] Assertion on Mac: Could not create a libwebsocket - FNetworkFileServerHttp::Init()

UE - Platform - Mobile - Jun 22, 2017

This is a common crash on Mac that occurs in the 4.16 release. This appears similar to [Link Removed], which was closed with the 4.13 release. Users have not provided descriptions. Many (but not a ...

Crash when destroying a pawn on the client

UE - Networking - Jul 6, 2015

Crash when destroying a pawn on the client. Reproduced in 4.8.1 and Main (//depot/UE4/Promotable-CL-2610743). This is a regression: the crash does not occur in 4.7.6 Crash Report: [Link Removed] ...

ZenGarden or project with MSAA enabled crashes on iPhone 6 and 6+

UE - Platform - Mobile - Jul 19, 2017

Zen Garden crashes on the iPhone 6+ before anything appears onscreen. Occurred on: iPhone 6+ on 10.3.2 Didn't occur on: iPhone 6S on 10.3.2 ...

Crash assigning spline mesh on tiled landscape

UE - LD & Modeling - Terrain - Landscape - Jun 1, 2015

Crash assigning mesh to spline on tiled landscape. ...

Crash when calling Get Material Slot Names node when using a static mesh component that does not have a specified static mesh

UE - Gameplay - Blueprint - Jul 24, 2017

Editor crashes when trying to using get Material Slot Name on a static mesh component that has not has a static mesh specified. ...

Crash creating local variable in ABP function

OLD - Anim - Dec 5, 2019

Creating a local variable in an ABP function crashes ...

Backwards-compatibility broken for the CDOs of Python-generated Unreal Types because of missing redirectors

UE - Editor - Workflow Systems - Feb 11, 2025

Previously, all Unreal Types generated by python scripts would be created inside package "/Engine/PythonTypes". This was changed by [CL 32478991 in ue5-main branch], which meant to "remove the restr ...

iOS fails during build step with OSS Facebook plugin enabled due to spaces in filepath

UE - Platform - Mobile - Feb 8, 2019

When a user tries to package or launch onto an iOS device they will fail at the build step due to:[3/8] sh Unzipping: /Users/Shared/Epic Games/UE_4.22/Engine/Source/ThirdParty/Facebook/IOS/FacebookS ...