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.  ...

Crane Yaw value affects attached Camera Rotation

UE - Anim - Sequencer - Aug 18, 2016

Crane Yaw value affects attached Camera Rotation. My expectation is based on the fact that Crane Pitch leaves the camera level ...

Window position is broken when using Windows 7 WINVER.

Tools - Aug 6, 2015

A user reported that the Window Position calculation is incorrect with Windows 7 WINVER. The source code appears to be using the calculated left value for the left side of the window, but the calcul ...

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. ...

Objects with Translucent Blend Mode Material Aren't Affected by Refraction

UE - Graphics Features - Feb 16, 2018

There is an issue occurring where Objects with Translucent Blend Mode Material Aren't Affected by Refraction. This affects any translucent material regardless of the translucent materials settings. ...

Material accuracy on iPhoneX is significantly inferior compared to iPhone 7

UE - Platform - Mobile - Feb 13, 2019

The accuracy of World Position and Camera Position in Material on iPhoneX is very inferior to iPhone 7. If you enable UseFullPrecision the result will be the same. ...

FBX imports incorrect vertex normals in 4.7

UE - Graphics Features - Mar 2, 2015

Box reflection captures with some assets are not working correctly. The reflection capture is being tiled with version after 4.7 that were not in 4.6. Images are attached to demonstrate along with ...

Initial Seed value on Random Stream node has no affect

UE - Gameplay - Blueprint - Nov 16, 2017

When using a Random Stream variable to populate a Random Integer in Range from Stream, the Initial Seed value has no affect on the random integer selected. Workaround: Using a Seed Random Stream or ...

Different Load Orders affect Shadows on Foliage & HISM

UE - World Creation - Worldbuilding Tools - Foliage - Mar 14, 2019

Different Load Orders affect Shadows on Foliage & HISM Discovered during verification of [Link Removed] Also created a Blueprint actor with a HISM and duplicated it three times and changed the mob ...

Crash after converting to 4.7.0 from 4.6.1

UE - Gameplay - Blueprint - Feb 26, 2015

User is crashing when opening project after converting to 4.7. [Link Removed] [Link Removed] LOG IS ATTACHED 4.6 project with updated plugin: [Link Removed] ...