BuildGraph builds some tools for Win32 even if Win32 is excluded from the build

UE - Foundation - Cpp Tools - Jan 16, 2019

When creating a local binary build of the Engine using the BuildGraph, there are several tools that are built for Win32 even if Win32 was specifically excluded from the BuildGraph (ie. -set:WithWin3 ...

Packaged Dedicated Server will not regenerate navmesh around instanced mesh

UE - AI - Jun 6, 2019

The foliage instanced mesh, as well as ISM and HISM components both appears to be unable to export navmesh data for generation once we introduce a change in the contents. This error only shows up in ...

Sequencer bindings are lost when creating Sequence Player after loading a Sublevel

UE - Anim - Sequencer - Jun 26, 2019

Sequencer bindings are lost when creating Sequence Player after loading a Sublevel using LoadLevelInstance. This was reported and tested in 4.21.2 (CL-4753647). This was reproduced in 4.22.3 (CL-7 ...

Niagara Sample Static Mesh. Source Not Working

UE - Niagara - Jul 7, 2019

Static meshes are not rendered as particles when using the Static mesh module in Niagara and setting its source to a static mesh in the scene. Tested in 4.21.2 (CL -  4753647), 4.22 (CL - 7053647), ...

Crash when generating proxy mesh

Tools - Jul 12, 2019

Generating a proxy mesh with imported models and the simplify mesh flag set to true causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22.3 (CL - 7053647), 4.23 (CL - 7288428), 4.24 (CL ...

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

UE - World Creation - Worldbuilding Tools - 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 ...

Display Texture Atlases in Widget Reflector displaying incorrect tooltips

UE - AI Workflows - UI Systems - Slate - Aug 3, 2023

Tooltips within Page 1 of the Texture Atlas Visualizer in Widget Reflector are displaying the incorrect asset. This issue is occurring in Binary //UE5/Release-5.3 at CL 26560699 This issue is occur ...

Lumen Reflections in Stereo are broken after Nvidia GPU Driver Update

UE - Platform - XR - Jul 29, 2024

After updating the NVidia graphics driver to v.552.74+, reflective/mirror materials appear broken and render with black and white lines in VR mode if they are in a level with a Post Process Volume w ...

Importing a New Substance Preset will crash the engine

UE - Foundation - Core - May 13, 2015

With the Substance plugin installed and when you try to import new preset data into the Substance Graph Instance, the engine will crash ...