Folder disappears upon cancelling renaming by pressing ESC key twice

UE - Editor - Content Pipeline - Content Browser - Sep 27, 2017

Working: 4.16 Broken: 4.17.1, 4.17.2, 4.18 When cancelling the renaming of any folder or sub-folder in the Content Browser by pressing ESC key twice, folder or sub-folder will not be visible in Co ...

Point lights with source length building static lighting in incorrect direction

UE - Graphics Features - Mar 21, 2018

There is an issue where Point lights with source length building static lighting in the incorrect direction, the axis in which the light to be built seem to conflict with the preview build. This iss ...

Exceptions can no longer be enabled for ProjectEditor targets

UE - Foundation - Cpp Tools - Jul 16, 2018

It is no longer possible to enable C++ exceptions for the ProjectEditor target in code projects that use the binary Engine. Some fixes that were made for 4.19 now correctly show an error message if ...

Properties of placed-in-map actor instances may not replicate if their default has been edited

UE - Networking - Mar 26, 2019

If the default value of a replicated property is edited on an instance of a placed-in-map actor, then on the server is value is changed back to the default, a client who joins in progress after this ...

[AI] FInstancedStruct is not dupilicated properly if values are different from an Actor's defaults

UE - AI - Jan 24, 2024

A licensee reports that the values of an FInstancedStruct do not get properly duplicated if they differ from the default values of the Actor or TArray to which they belong. Possible short-term wo ...

Lightmaps on Mobile Devices Appear Dirtied and Pixelated

UE - Platform - Mobile - Jun 19, 2015

Baked lighting on mobile has dirtied or pixelated lightmaps. When testing this issue I attempted to change various settings within the 'Lightmass' section and the changes made did not have much effe ...

[CrashReport] UE4Editor-CoreUObject.dylib!FArchiveAsync2::Serialize() when cooking for iOS on Mac

UE - Platform - Mobile - Jul 27, 2017

This is a Mac cooking for iOS commandlet crash that has occurred occasionally for some users in 4.16. Example Command Line (PII removed)/Users/---/Desktop/---/---.uproject -run=Cook -NoLogTimes -T ...

Mouse cursor does not disappear when widget has focus

UE - Editor - UI Systems - Nov 20, 2017

THere is an issue with the Mouse cursor when using UMG with the set show mouse cursor option. after setting the set show mouse cursor off pressing a widget and giving it focus causes the mouse curso ...

Pixelated texture has material artifacts occur when two corners are covered

UE - Graphics Features - Feb 2, 2018

There is an issue with ramp-like textures where multiple corners are covered when you apply the mesh with the alpha channel on, there is a strange border that appears around the whole plane mesh tha ...

[CrashReport] UE4Editor_Core!FGenericPlatformMemory::OnOutOfMemory() [genericplatformmemory.cpp:184] - FPngImageWrapper::UncompressPNGData

Tools - Mar 23, 2018

Comment for user in crash group:Just add automotive project to my account, add it as 4.18, and each time trying to laod it, it crashes... 174 if (GWarn) 175 { 176 GMallo ...