Unreal Engine Issues
Unreal Engine Issues
Specular Scale 0 on Light still affects Groom asset
UE - Rendering Architecture - Jul 30, 2025When 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. ...
Pin wires do not connect correctly after collapse to function and duplication
UE - Gameplay - Blueprint - Mar 20, 2017Pin wires do not connect correctly after collapse to function and duplication. Any node can cause this issue, I used an INT variable because it was quick to test with. Regression: This issue affect ...
Static code functions cause associated blueprints to not compile after a hot reload
UE - Foundation - Cpp Tools - Hot Reload - Oct 14, 2016If a function inside a BlueprintFunctionLibrary class is declared as static, instances of the function node inside blueprints cause the blueprint to not save after a hot reload. This does not affec ...
Typo in Content description field for Flipbook Material Expression Function Output
UE - Content - Engine - Jan 17, 2020**Typo in Content description field for Flipbook Material Expression Function Output ...
Overridden custom functions have inputs locked when parent actor is altered
UE - Gameplay - Blueprint - Sep 14, 2016Overridden custom functions have inputs locked when parent actor is set to different blueprint type. Regression (no) issue (does) occur in 4.12.5 ...
Crash occurs when adding code to custom node in Material Function.
UE - Graphics Features - Mar 16, 2021A Salesforce ticket reports that entering the above code into a custom node in a Material Function causes a crash. I was able to repro his crash reliably. This is a regression. Working as expected ...
Static Lights with IES Profiles Will Bake an Incorrect Lightmap
UE - Graphics Features - Jan 3, 2019When using an IES profile with a static light, the lightmap that gets baked will lose all detail of the IES profile. Example project attached. This doesn't occur in 4.19 CL# 4033788 Found in 4.20 ...
Anti-Alias from Draw Line Function does not fully appear on Android
UE - Platform - Mobile - Aug 24, 2015Some of the lines within the launched or packaged version on Android for the draw line function, but not all of them do. This has been checked on iOS and it's working perfectly fine in both 4.8.3 an ...
Map Build Data Registry node not visible after building lighting
UE - Graphics Features - Oct 7, 2016When the user builds lighting on a level, the Map Build Data Registry node is marked dirty, but isn't visible to the user initially. Selecting the filters dropdown, checking and unchecking a filter ...
Collab Viewer Template menu does not function properly in VR Preview
UE - Platform - XR - Dec 9, 2022Regression: Tested this issue in Release-5.0, this issue did not occur so regression is yes There are chances that the menu will disappear as if functioning properly, but it locks out all control f ...