Large Landscapes using World Composition have weird LODs when streamed out and back in

UE - Engine Scaling - Streaming - World Composition - Mar 13, 2020

When World Composition Sublevels are streamed out and back in the LODs appear distorted. This reported and tested in 4.24.3 (CL-11590370). This was reproduced in 4.23.1 (CL-9631420), 4.25 Preview ...

When setting in PreviewGameLaunguage, the package application always adds "culture" to the argument

UE - AI Workflows - UI Systems - Localization - Nov 12, 2020

Whenever packaging project from Launcher with a PreviewGameLanguage set, the culture="preview language" is added to the UE4CommandLine.txt file. Can avoid this issue by setting "None" in PreviewGam ...

WaitMutex behaves poorly when there are casing differences in the same path

UE - Foundation - Cpp Tools - UnrealBuildTool - Jan 5, 2021

The proposed solution here is to make the casing of the path provided to the hashing function for the mutex consistent with something like:publicstatic string GetUniqueMutexForPath(string Name, stri ...

Shadows can appear interrupted

UE - Rendering - Features - May 28, 2021

Screenshots of the issue are attached. Shadows can appear interrupted and cut off in UE5 Early Access This issue is occurring in //UE5/Release-5.0-EarlyAccess Binary CL 16433597 This issue is NOT o ...

Duplicate actions appear in the Blueprint graph right-click menu for AddComponent node actions when "Context Sensitive" is checked.

UE - Framework - Blueprint Editor - Nov 23, 2022

When the "Context Sensitive" option is checked, there is a duplicate menu item that appears in the Blueprint graph's right-click context menu for every "Add Component" menu action. Unchecking "Cont ...

Mass Entity Config not displaying or accepting drag and dropped State Tree assets

UE - Engine Scaling - Mass - Nov 23, 2022

This is not a regression. Tested in //UE5/Release-5.0 CL20979098 Mass Entity Config not displaying or accepting drag and dropped State Tree assets. The only clear way to assign a State Tree is by c ...

Cloth collisions thickness doesn't scale with the character.

UE - Runtime - Simulation - Jan 10, 2023

Character's clothes bubble up as their scale goes down due to the collision thickness not being correctly scaled. ...

Eyeball appears opaque on project launch

UE - Rendering - Features - Feb 21, 2023

Runtime changing r.VT.PoolSizeScale doesn't resize virtual texture pools

UE - Rendering - Architecture - Apr 21, 2023

r.VT.PoolSizeScale should be changeable at runtime so that we can resize VT physical pools for iteration on selecting pool sizes. It works correctly at engine startup but runtime changes have no ef ...

Rect light artifacts from NaN pixels on surfaces that are coplanar with light position

UE - Rendering - Features - May 10, 2024

Rect lights cause artifacts (nan pixels) on pixels of surfaces that are coplanar with light position.  In RectLight.ush, in RectIrradianceLambert, at line 106, c30 is -1, so rsqrt(0) causes a nan to ...