Texture Sample 2D Parameter not Working with WPO on Mobile Quality ES3.1

UE - Platform - Mobile - Jun 30, 2017

WPO does not accept TextureParameter2D nodes when deployed to High End Mobile. The interesting thing is that all other inputs accept Param2D, so it is not entirely clear why WPO is not working. If ...

[CrashReport] UE4Editor-Kismet.dylib!FTabInfo::OnMouseDownHisory(FGeometry const&, FPointerEvent const&, TWeakPtr<SMenuAnchor,()

UE - Platform - Apple - Jul 20, 2017

This is a common crash affecting Mac users in 4.16. It has occurred since at least 4.13 ...

Casting to ActorComponentOwner inside of nested Inline instanciated Blueprints owned by ActorComponentOwner disappear after Editor restart.

UE - Gameplay - Blueprint - May 15, 2018

A set of objects which can be instantiated Inline in the Editor that contain an array of References to their children that have nested Blueprint objects inheriting from a Native Base Class can cause ...

Find Session and Join Session to join a session over LAN on iOS is inconsistent and requires being run multiple times to work

UE - Networking - Aug 8, 2018

Attempting to use Find Session / Join Session to join a LAN session on iOS results in inconsistent results, requiring the client to press the join button multiple times to join properly. Currently ...

Mobile VR Rendering Freeze with World Composition

UE - Platform - XR - Oct 17, 2018

Rendering freezes on Oculus mobile with World Composition. ...

Breakpoints on nodes in deleted functions are not cleared

UE - Gameplay - Blueprint - Nov 16, 2018

Might be a simpler repro than this, but take a look at revision 1 of PreRolledBoxes in FortniteMain to see an asset affected by this. It was duplicated from StoreRoot which had breakpoints in some o ...

Gameplay Tag Query Variables Don't Retain Custom Default Values in Custom Structs

UE - Gameplay - Dec 4, 2019

Gameplay Tag Query variables in custom structs created via the content browser do not retain custom default values. Found in 4.23.1 CL# 9631420 Reproduced in 4.24 Preview 4 CL3# 10387632, 4.25 Main ...

Landscape Tutorial Missing a Word

Docs - Dec 9, 2019

In the Landscape Tutorial Overview there is a word missing in the tutorial. ...

All Vive Trackpad Inputs Send The Same Input

UE - Platform - XR - Jan 13, 2020

The vive trackpad inputs all read as the same input. Found in 4.24.1 Reproduced in 4.25 Main ...

Widget With Spinbox Crashes When Destrcutor Is Called With Multithreaded Destruction Enabled

UE - Foundation - Core - UObject - Feb 28, 2020

When a widget with a spinbox is calls it's Destructor with "Multithreaded Destruction" enabled the engine crashes. I have tested in 4.23.1, 4.24.3, and 4.26 Main with "Multithreaded Destruction" dis ...