Nanite cast shadows from all lights, regardless of lighting channel configuration

UE - Graphics Features - Nanite - Dec 4, 2023

This behavior is inconsistent with the behavior of non-nanite meshes, which receive light and cast shadows only from lights in the same lighting channel. [Image Removed] ...

Point lights with source length building static lighting in incorrect direction

UE - Graphics Features - Mar 21, 2018

There is an issue where Point lights with source length building static lighting in the incorrect direction, the axis in which the light to be built seem to conflict with the preview build. This iss ...

'Set Timer by Function Name' not able to call functions that return an Output Parameter

UE - Gameplay - Jul 16, 2018

When using a 'Set Timer by Function Name' node with a Function that has an Output parameter it will fail at executing the Function. If the Function is called with an Event BeginPlay node it will fu ...

GPU Lightmass ignores IES Profiles on Static Lights while building lighting

UE - Graphics Features - Jun 8, 2022

This is a regression tested in //UE4/Release-4.27 CL#18319896 GPU Lightmass ignores IES Profiles on Static Lights while building lighting. Tested with different Global Illumination and Reflection s ...

Crash when Building Lighting on Macs with Lighting Scenarios

UE - Platform - Apple - Oct 27, 2016

A crash occurs when you building lighting with a project using Lighting Scenarios on a Mac. I attempted to reproduce the issue using a new blank project, but was unable to get the crash to occur. T ...

'Affect Translucent Lighting' setting on Lights not working in Forward Renderer

UE - Graphics Features - Apr 30, 2017

The option 'Affects Translucent Lighting' for lights does not seem to have an affect objects/materials using translucency. I tested this setting in the Deferred Renderer and it works as expected. I ...

Debug is not functioning within the Blueprint Function Library

UE - Gameplay - Blueprint Editor - Jul 6, 2015

The blueprint debug filter is not working properly. It shows when your print string is being called but it isn't showing the trace location of the actual function from the blueprint. ...

Adding a Reroute node to a function's array output will cause the Function node to be missing the output

UE - Gameplay - Blueprint - Mar 26, 2015

Adding a Reroute node to a function's array output will cause the Function node to be missing the output. This seems to be only effecting Arrays. Standard variables work fine. ...

Renaming a BP interface function/event breaks all existing uses of that function/event

UE - Gameplay - May 24, 2018

If you rename a blueprint interface function or event that is used somewhere in a blueprint, it will break the usage of that function/event. If it was a function, it will actually delete all the BP ...

Setting Lights, Static Meshes, and Actors to movable creates lighting error

UE - Graphics Features - Aug 15, 2017

There is an error that is occurring when using movable lighting with objects and actors that are also set to movable. This issue does not occur with objects or lights that are NOT set to movable. V ...