Unreal Engine Issues

Add Substrate Material Support to Lumen Performance Overview

There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...

Automotive Materials - ClearCoat Specular Artifact with Saturation ~1

[Link Removed][Link Removed] ...

PIE registers 2 Default Brushes in the blank level

PIE registers 2 Default Brushes in the blank level. It's expected behavior to have 1 Default Brush, which is the case in other play modes, but PIE registers 2. Licensee Description: This is an iss ...

KiteDemo: Bookmark 1 - bird visuals and audio missing

While testing KiteDemo for 4.16 Sample Pass – //UE4/Release-4.16 CL 3420042 in Binary – I found that aside from the incredibly low FPS, some of the Bookmarked camera locations have issues. In the fi ...

AbcImporter for Skeletal Mesh doesn't support material slot naming

AbcImporter for Skeletal Mesh doesn't support material slot naming

Fbx importer can import valid under 30Hz anim at 30Hz

The samplerate of a track was compute with the following formula Equation 1: number of Key / animation Time This formula work only if we have animation keys that are time equidistant. example of ...

Crash when changing the number of instances in a grouped sprite component at runtime

A crash occurs when you remove a Sprite Instance within a Paper Grouped Sprite component of an Actor BP on Event Begin Play. I was able to reproduce this crash in the binary releases of 4.11.2 and ...

Occasional 1-frame UMG render data corruption on Metal

Example 1.3: Constraint Profiles animation not working in ContentExamples

This bug does not occur in //UE5/Release-5.0-EarlyAccess or in Release-4.27 making it a regression.  This also occurs in //UE5/Main  ...