Default values of map variable with instance editable set to true cannot be changed for instances in the level

UE - Gameplay - Blueprint - Feb 6, 2018

It appears that the information contained in a map variable that is been marked as instanced editable can not have the information changed from the default values. An instance who values have been c ...

Memory Leak when Debugging Blueprint

UE - Rendering Architecture - RHI - May 2, 2018

RAM usage continually increases when debugger is active https://answers.unrealengine.com/questions/784443/ue-4191-memory-leak-while-using-blueprint-debugger.html ...

Invalidation box appears inconsistent when using child widgets

UE - Editor - UI Systems - Jun 21, 2018

Invalidation box appears to be inconstant when using a child widget that has been added via the user created section. A child widget that modifies itself will not update when placed inside of an inv ...

Adding a call to the parent function when executing an inherited multicast event on a client results in the events being called on the client twice

UE - Gameplay - Blueprint - Apr 2, 2019

A user has reported that adding a Parent call to an inherited multicast function causes the event to be called twice if it is executed on a client. Regression?: No This occurred in 4.20 Link to te ...

Crash when loading iCloud/CloudKit SaveGame on iOS

UE - Platform - Mobile - Jun 5, 2019

"...it seems the crash occurs because it is trying to load an empty (0 byte) save file. Stepping through the code in Engine/Plugins/Online/IOS/OnlineSubsystemIOS/Source/Private/OnlineUserCloudInterf ...

Mobile HQ reflection option does not use the sky reflection cubemap.

UE - Platform - Mobile - Mar 28, 2018

See attached image., the selected sphere is using HQ reflections. HQ reflection code does not look for sky captures. Note that the sky capture does not require the parallax correction code. ...

When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float"

UE - Gameplay - Sep 13, 2019

When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float". Found in 4.22.3 CL#7053642 Reproduced in 4.23.0 CL#8386587, 4.24.0 Main CL#8671808 ...

Unable to Select Item from list in blueprints under certain conditions

UE - Editor - UI Systems - Slate - Feb 25, 2020

[Image Removed]  This happens with not only enums, but any combo box. Another example is the "Create Event" where you can select a matching function. This is a problem with how this slate widget ...

Level export to FBX with actor X axis negative scale has issue in 3ds MAX

UE - Editor - Content Pipeline - Datasmith - Importer - Jul 20, 2020

The fbx exporter set the fbx axis system like 3ds max, so the max importer is not converting the incomming transform. see: ...

DX12 crash by lost device while building PSO

UE - Graphics Features - Sep 22, 2020

It seems to be occurred when exiting fullscreen exclusive mode during the PSO build. And it seems to happen during the loading screen as well as the PSO build. What I suspect is that when focus los ...