Unreal Engine Issues

Undo Crash with Reroute node into Class pin of SpawnActorFromClass

Crash on undo with SpawnActor node that uses a reroute pin in class wire. "It looks like the variable promotion marks the blueprint as structurally modified, which triggers a skeleton compile, wh ...

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 ...

Custom node with SceneTextureLookup function doesn't support on Mobile anymore

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 ...

Large UMG Blueprint widget trees can lead to very long compile times when packaging with Blueprint nativization enabled.

Licensee reports very long C++ compile times during packaging after nativizing a UMG Blueprint asset containing a very large and heavily-nested widget animation hierarchy. The support thread outlin ...

Volumetric Lightmap Holes Appear Every Fifth Build

Volumetric lightmap holes appear every fifth build.  Found in 4.19 CL# 4033788, 4.20 CL# 4302132, and 4.21 CL# 4348893 ...

Navigating the Editor on Linux with a Wacom Tablet is difficult

Movement is quite sporadic and jumpy when using a Wacom Tablet to navigate the Editor on Linux. The Editor pans and zooms in and out really quickly with the slightest of movements. This was report ...

InstanceOnly properties are written to a Blueprint

When CopyActorProperties is used with a target being a template such as a blueprint, it can copy and serialize EditInstanceOnly Properties. ...

Remote standalone build of a project fails due to incorrect path to project's Info.plist file

Attempting to use UAT on Windows to remotely create a standalone build of a project for Mac fails in 4.19. The error message indicates that it cannot find part of the path to the project's Info.plis ...

Support for 16-bit precision for positions in vertex buffer

Add support for 16-bit per component format for POSITION in vertex buffers as an option. Half-precision is already supported for UVs and TANGENTS on a per model basis, and was hoping that this woul ...