Attempting to generate abstract class from blueprint crashes editor on compile

UE - Gameplay - Blueprint - Sep 22, 2016

Attempting to generate abstract class from blueprint crashes editor on compile. Frequency: 4/4 ...

AreaFlags Empty During First PIE Session After Hot Reloading

UE - AI - Dec 12, 2016

AreaID always seems to be empty during the first PIE session after hot-reloading. Only able to test in Dev-Framework CL# 3221683 due to the licensee's project being created in 4.15 and not being b ...

Packaging fails with Event Driven loader enabled and two function libraries reference each other

UE - Foundation - Core - Mar 29, 2017

Packaging fails with Event Driven loader enabled and two function libraries reference each other even though the functions referenced in each library to NOT call each other in such a way as to creat ...

Typing Lerp into context menu of material editor does not bring up Linear Interpolate node

UE - Rendering Architecture - Materials - Jul 31, 2015

If "lerp" is typed into the context menuof the material editor, "linear interpolate" will not appear as one of the options within the menu. Typing "Linear Interpolate" or pressing L+LMB works as exp ...

Crash when closing the timeline tab inside UMG editor and reopening UMG editor

UE - Editor - UI Systems - Aug 16, 2016

Crash when closing the timeline tab inside UMG editor and reopening UMG editor Reported here:https://udn.unrealengine.com/questions/307297/umg%E3%82%A8%E3%83%86%E3%82%A3%E3%82%BF%E8%B5%B7%E5%8B%95% ...

TBigInt allocates twice as much memory as necessary for FString input

UE - Foundation - Core - Jul 9, 2015

TBigInt appears to allocate twice as much memory as necessary for the input. This produces an unexpected output of the input value. ...

Pressing "+" element in landscape grass type asset crashes editor

UE - LD & Modeling - Terrain - Landscape - Jul 31, 2015

Creating a landscape grass type and then pressing the + to add an element crashes the editor. Frequency: 2/2 Crashreporter: not currently available ...

Creating External Curve for a function's local struct variable causes editor to crash

UE - Gameplay - Blueprint - Sep 6, 2016

Defining a FRuntimeFloatCurve inside a code based struct causes the editor to crash if the struct is added as a local variable to a blueprint function and the "Create External Curve" button is press ...

KismetFunctionLibrary: Equals and NotEquals (SoftObjectReference) not accessible in BP Editor

UE - Gameplay - Blueprint Editor - Sep 2, 2022

In blueprint graphs, the action list for soft object references of a Object subclass is incorrect. "Equal" spawns an incompatible node, while the expected "Equal (SoftObjectReference)" is missing. " ...

Swarm Coordinator is not distributing Lighting Builds

UE - Foundation - Core - Jul 20, 2015

Swarm Coordinator in 4.8.1/2 is not distributing light builds across accessible agents. If you have and open a Coordinator included in the 4.7.6 build of the Engine, Coordinator is distributing cor ...