Adjusting Lighting Rig Rotation manually only affects the sky and not the lighting

UE - Gameplay - Aug 2, 2016

In the Preview Scene Settings, adjusting the Lighting Rig Rotation setting manually doesn't affect the lighting. It only affects the sky. ...

Option "Always load last project on startup" is broken on UE 5.3

UE - Editor - Dec 9, 2023

In UE 5.3, when the option "Always load last project on startup" is enabled and a new Editor launch attempts to automatically reopen the last closed project, the dialog "The following modules are mi ...

Flipping faces on a brush affects all other brushes

UE - LD & Modeling - Modeling Tools - BSP - Apr 9, 2015

Flipping faces on a brush affects all other brushes Subtractive brushes will have their internal faces show if enough additive brush faces are flipped. If the faces of a subtractive brush are flip ...

The cap of a sliced procedural mesh is not affected by lighting

UE - Gameplay - Jul 14, 2016

After slicing a procedural mesh, the cap on the sliced end does not seem to be affected by lighting. This can result in the end looking dark. ...

OSVR is affected by screen percentage Post Process volumes

UE - Platform - XR - May 6, 2016

Found on: //UE4/Dev-VR CL-2967563 Screen percentage post process volumes affect rendering on the OSVR. It also renders incorrectly when affected. The incorrect effect has been logged as [Link Remo ...

Cull Distance Volumes Affecting Actors After Being Deleted

UE - Graphics Features - Oct 7, 2019

Cull Distance Volumes Affecting Actors After Being Deleted. Found in 4.22 CL# 7053642, 4.23 CL# 8386587, and 4.24 CL# 9428115 ...

ContentExamples: UMG Example 2.3 "blueprint" is lowercased

Docs - Samples - Jan 19, 2017

The word "blueprint" on stand 2.3 in the Content Examples: UMG map is lowercase, but should be capitalized ...

Specular Scale 0 on Light still affects Groom asset

UE - Rendering - Architecture - Jul 30, 2025

When a light's Specular Scale is set to 0, the specular still affects hair / groom assets. The specular of other assets (like a shiny static mesh in the scene) is properly affected by the change.  ...

Lumen temporal flicker after leaving Editor open for 3+ days

UE - Graphics Features - Lumen - Nov 18, 2024

Lumen GI has temporal flickering/noise after running the Editor for 3+ days. ...

Materials with Subsurface Profile not affected by Opacity value

UE - Graphics Features - Oct 24, 2017

A material with Shading Model set to Subsurface Profile is no longer affected by Opacity value in 4.17, 4.18, and 4.19 (Main) but was previously working as intended in 4.16. This is a regression. ...