Renaming function in parent class that is overridden by child causes an ensure

UE - Gameplay - Blueprint - Aug 5, 2016

Extremely similar repro to [Link Removed], except in this case the parent function has no parameters or return values. Also encountered a one-off crash while exploring repro methods, but was unabl ...

Interface functions called as events in Blueprints that implement the interface cannot be set to replicate

UE - Gameplay - Blueprint - Jun 11, 2015

Interface functions called as events in Blueprints that implement the interface cannot be set to replicate. When the event node is clicked, the Details panel is empty. Reproduced in 4.7.6, 4.8, and ...

Security light does not flash when activated in BlueprintOffice on tvOS

Docs - Samples - Oct 10, 2016

Lights are not working correctly in BlueprintOffice. tvOS 10.0 ...

Interface as a function parameter does not get set unless class directly inherits the interface

UE - Gameplay - Blueprint - Mar 16, 2017

When a function takes an interface as a parameter, calling that function from a blueprint implementing the interface does not recognize the parameter unless the blueprint's parent class directly inh ...

Duplicating Interface functions causes the Input/Output values to duplicate twice

UE - Gameplay - Apr 27, 2018

When duplicating an Interface function, the values for Input/Output are doubled or tripled. ...

Opening Materials and Material Functions with Vertex Interpolator node Results in Crash

UE - Graphics Features - May 23, 2018

Per Licensee: Hello, We are migrating our project from 4.18 to 4.19.2 and we are encountering various crashes while opening our material and material functions. I'm adding a simple test case here. ...

The 'Wind' Material Node Function Not Accepting Vector4 Parameter

UE - Graphics Features - May 5, 2015

In order to use the 'Wind' material function correctly the function states you need to reference the 'Wind Directional Source' actor. The only way to do this within the material editor and through b ...

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 ...

Volumetric Light Fog Leak through objects

UE - Graphics Features - Dec 31, 2018

Any environment with volumetric fog enabled will have a light leak which appears through objects.  Found in 4.20 CL# 4369336, 4.21 CL# 4613538, 4.22 CL# 4666322 ...

Pasting a material graph breaks connection to any material function nodes.

UE - Rendering Architecture - Materials - Dec 4, 2019

Pasting a material graph breaks connection to any material function nodes. ...