Unreal Engine Issues

Clothing Pops on start and LOD switching

Clothing can have noticeable popping when switching LODs, and there is currently no mechanism to initially start cloth in a resting pose, causing popping on spawn. ...

NavLink component does not account for the cost of the path set by AreaClass

In the test case, the NavLink component has a navigation cost of 1000000000. When the AI navigates to the NavLink the printed cost is only 2677. It is believed that the AreaClass isn't being taken i ...

Movable Point Lights Don't Cast Volumetric Shadows From Meshes Whose Materials Have Tesselation Enabled

Point lights don't cast volumetric shadows from meshes with materials with tessellation, even if tessellation multiplier is 0.  Found in 4.19 CL# 4033788, 4.20 CL# 4302132, 4.21 CL# 4347190 ...

Can't select BSP in sublevel after change Level Tile's position

ARKit Crash with Session Type: Image

AR app crashes when starting AR session if session type is set to "Image". Also confirmed in Main CL 4346626 ...

Sequencer XML generates wrong File Path for Image Sequence

Outputing Image Sequences like {shot}/{shot} _ {frame} .png for example, the xml file doesn't reflect the right path because it's referring to .avi files. We can't find and replace avi files in ...

Crash When Trying to Set Default Values to a Structure That Includes a Transform Variable

The Editor will crash when trying to set default values to a structure that includes a transform variable. Found in 4.19 C# 4033788, 4.20 CL# 4302132. 4.21 CL# 4347190 ...

Datasmith imports glossiness Texture as a Normal Texture

The Datasmith Importer for 4.20 (4.20E2) imports Glossiness Textures as Normal Maps. This is a regression from 4.19.2 (0.182) as Glossiness Textures were imported as World Textures ...

Component default data can be lost for a non-nativized Blueprint class that inherits the component from a nativized parent Blueprint class.

This is a regression that was introduced by the fix for [Link Removed]. The fix makes an invalid assumption that instances of components whose archetypes are inherited by a non-nativized child Blue ...

Logs containing UTF-8 characters don't appear in CMD/Terminal on Linux

If a log message contains UTF-8 characters like "ő" or any Russian one ("л") it won't be printed to cmd or terminal but it will be printed to the log file. This is a regression from 4.19.2 (CL-40337 ...