Lighting Channels Do Not Function with 78+ Lights on Actor

UE - Graphics Features - Oct 20, 2017

Lighting channels do not function when the number of lights affecting actors is 79 or higher. Any number of lights that is 78 or fewer will honor lighting channel assignments. ...

NPC - Texture Sample DI does not work on Niagara Parameter Collections

UE - Niagara - Nov 8, 2023

Texture sample DIs no longer work when used with Niagara Parameter Collections. This seems to affect Volume Texture DIs based on customer reports, but I have not confirmed this.  ...

Expanding a folder in the Finder through the editor will crash the editor

UE - Platform - Apple - Mar 16, 2015

Expanding a folder in the Finder through the editor will crash the editor. Reproduced in 4.7.2 binary on 10.9.5 Crash Report: [Link Removed] ...

NavMesh does not build correctly to SkeletalMesh collision

UE - AI - Mar 16, 2015

NevMesh cuts out holes for collision incorrectly with Skeletal Meshes. Skeletal Meshes with "Can Ever Affect Navigation" set to true and that have a Physics Asset are capable of causing this. ...

Reduced Tessellation at edge when using world displacement

UE - Graphics Features - Jan 11, 2016

Adding a material to a mesh that is affected by world position offset has reduced tessellation around the meshes edges. This is seen when viewed in wireframe and is influenced based off of the angle ...

GetSoftBounds for SteamVR Chaperone returns bogus numbers with VRmonitor not running

UE - Platform - XR - Aug 29, 2015

The "Get Soft Bounds" node returns bogus numbers instead of just all 0's if the VRMonitor is not running. Found on UE4-Releases 4.9: CL-2673023 ...

App does not appear in Settings on iOS device

UE - Platform - Mobile - Aug 11, 2016

Unable to see settings for a packaged project on iOS. Searching for the app settings also did not show anything Device tested on: iPod6_6131 OS 9.3.2 ...

meta specifier ArrayClamp does not work with array in struct

UE - Gameplay - Blueprint - Sep 14, 2016

Giving an int32 variable the specific ArrayClamp has no affect when the specified array is defined inside a USTRUCT(). Variable is able to be set to a value outside of specified struct's range. ...

Can't undo blueprint/material movement done by arrow keys

UE - Gameplay - Blueprint - Feb 8, 2017

When moving nodes in materials and blueprints using the undo option doesn't undo the movements made by the arrow keys. This issue affects anything that uses nodes on an event graph. ...

Enable Sound editor preference does not disable sound during PIE

Tools - Sep 26, 2016

When Enable Sound is disabled in the editor preferences, sound is still played during PIE sessions. This setting does not work as expected back to 4.9, but worked in 4.8. ...