the "Is Visible" node does not appear to consider the visibility of any parent widgets

UE - Editor - UI Systems - Jan 19, 2018

When using the "Is Visible" node for a widget who parent is set to hidden, the node will return true even though the widget cannot be seen. ...

UMG Animations do not play while the widget is offscreen

UE - Editor - UI Systems - Jan 22, 2018

Currently, widget animations are updated in UUserWidget's NativeTick. Widgets do not tick when they are offscreen (as intended), but as a side effect, animations are paused and will resume once the ...

Enabling "Include app-local prerequisites" does not work - Causes errors or warnings

UE - Foundation - Core - Jan 25, 2018

Enabling the "Include app-local prerequisites" causes errors or warnings to appear when packaging. 4.17 error:Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exce ...

Audit usage of StaticClass() in AssetMappingTable and AnimationAsset code

OLD - Anim - Jan 24, 2018

A user has pointed out that code in AssetMappingTable.cpp and AnimationAsset.cpp are using the StaticClass() method on pointers. Because StaticClass is a static method, it relies on name hiding to ...

Instanced Properties remain after compile

UE - Gameplay - Blueprint Editor - Jan 25, 2018

Our team has been using property instances, and have run into several problems. We were able to reproduce one of the problems, and I was hoping to have your team look at it. General scenario. We ha ...

Compiling blueprint with nested subobjects loses data

UE - Gameplay - Blueprint - Jan 25, 2018

The attached project is from a licensee who made a Quest system where a blueprint has several ConditionContainer instanced subobjects, that contain EdGraphs with custom question condition nodes. On ...

[Windows 10] Hitting the Windows key while in fullscreen summons an invisible but still interactive Start menu

Tools - Feb 1, 2018

On Windows 10, pressing the Windows key in a fullscreen UE4 application summons the Start menu beneath the application. However, the Start menu still receives input, which can cause applications to ...

Engine build fails due to Unresolved External Symbol error after adding a new global variable to the Engine and then trying to reference it within Engine code

UE - Foundation - Cpp Tools - UnrealBuildTool - Feb 7, 2018

Building the Engine in Visual Studio will fail due to an unresolved external symbol error if a new global variable is added to CoreGlobals.h and then referenced elsewhere in the Engine code. The bui ...

Normal are different after Merge Actor on scaled objects

OLD - Anim - Feb 8, 2018

Normal are different after Merge Actor on scaled objects. If the actors aren't scaled, the issue doesn't seem to occur. A licensee is trying to use the Merge Actor tool to optimize their entire pro ...

When moving a variable from a child to a parent class, blueprints that reference the variable will fail to compile

UE - Gameplay - Feb 12, 2018

When moving a member variable from a child class to the parent, then deleting the child class, blueprints that reference the member variable will fail to compile until the node is removed and re-add ...