Build lighting for single stationally light level generates a shadow map in PF_B8G8R8A8 format

UE - Texture - Nov 1, 2024

Texture format override to BGRA8 due to changes in CL-30603716. The following code can restore the previous behavior. void FShadowMapPendingTexture::StartEncoding(ULevel* LightingScenario, ITexture ...

"Distance Field Resolution Scale" in Build Settings is set to 0 by importing assets via "Import into a level"

UE - Editor - Content Pipeline - Import and Export - Mar 18, 2022

"Distance Field Resolution Scale" in Build Settings is set to 0 by importing assets via "Import into a level". That causes not to genarate any distance field meshes of all assets imported via "Imp ...

The base color of a material in unlit mode changes when specular amount is above 0.0

UE - Graphics Features - Feb 24, 2020

Material's RGB base color values are changed in Unlit mode when specular is greater than 0.  User repro video:  [Link Removed] Tested in: 4.23.1 CL#9631420, 4.25 CL#11574810 ...

Engine Crashes When Trying To Reimport Skeletal Mesh For One That Has No Clothing Data

UE - Simulation - Physics - Character - Jan 17, 2020

The engine crashes when trying to reimport a skeletal mesh that has no clothing data. This seems related to https://jira.it.epicgames.net/browse/UE-86948. Found in 4.24.1 CL#10757647 Reproduced in ...

Hidden Shadows Aren't Rendered When Raytracing Is Enabled

UE - Graphics Features - Lumen - Mar 13, 2020

Hidden shadows aren't rendered when ray tracing is enabled. Found in 4.25 Preview 2 CL#12055273 Reproduced in 4.23.1 CL#9631420, 4.24.3 CL#11590370, 4.26 Main CL#12123513 ...

Callling "Get[AxisMapping]" or adding AxisMapping Event node in blueprint will break code input implementation for that axis mapping

UE - Gameplay - Input - Aug 17, 2016

When character input is defined in code, adding a call to the Get[AxisMapping] node in blueprints causes input for the specific mapping to fail. Note: This only affects code based input, Blueprint ...

Player input on the Client while Ejected during PIE will show on the Server (Editor) viewport and not on the Client window

Tools - Jul 17, 2015

Player input on the Client while Ejected during PIE will show on the Server (Editor) viewport and not on the Client window. Reproduced in 4.7.6 binary, 4.8.2 binary and Main (//depot/UE4/Promotable ...

"Failed to find object 'Class None'" in project log after creation

UE - Foundation - Core - Nov 17, 2014

Users reported seeing the line "LogUObjectGlobals:Warning: Failed to find object 'Class None.'" in the Output log after creating a project. I was able to confirm in a new blank code project without ...

Editor Crashes if GetMaterialIndex is called with an invalid slot name

UE - Graphics Features - Feb 8, 2017

Calling Get Material Index node with an invalid slot name will produce a return value of -1. Passing this value to a Get Material node causes the editor to crash. ...

Steam Sessions fails to create when using the Create Session node

Docs - Nov 30, 2021

This is a Regression. 4.26.2 - Binary - no issue creating a session. 4.27.1 - Binary - no issue creating a session if you convert a previously working 4.26.2 project. 4.27.1 - Binary - Fails to c ...