Unreal Engine Issues
Unreal Engine Issues
Opening Materials and Material Functions with Vertex Interpolator node Results in Crash
UE - Graphics Features - May 23, 2018Per Licensee: Hello, We are migrating our project from 4.18 to 4.19.2 and we are encountering various crashes while opening our material and material functions. I'm adding a simple test case here. ...
UAT searches wrong root folder for include paths specified in .Build.cs
UE - Foundation - Cpp Tools - Automation Tool - Jun 21, 2018When running the BuildPlugin command on a plugin in 4.20 preview 3, UAT is not detecting the correct root folder for the relative include paths specified in a module's .Build.cs. Expected: UAT is a ...
Crash When Substance Material Is Applied to a Mesh In HLOD System
UE - World Creation - Worldbuilding Tools - HLOD - Sep 3, 2018Crash when Substance material is applied to a mesh included in the HLOD system. Working as expected in 4.19 CL# 4033788. Unable to test issue in 4.21 CL# 4339215 due to plugin dependency. Found in ...
Packaging fails with too many instanced static meshes
UE - Graphics Features - Jun 8, 2018Project will fail to package with more than one actor containing ISM Components. From user: "...After some testing I found that it only occurs if there are multiple actors in a map (either of the ...
[AI] Unable to set StateTree asset to use in MassStateTreeTrait
UE - AI - StateTree - Dec 15, 2022You can no longer set the StateTree asset to use in a Mass Entity Config data asset. The list shows as empty even when making a new StateTree specifically using Mass Behavior schema. Attempts to add ...
Crash when adding a streaming level to the world through Python
UE - World Creation - Worldbuilding Tools - World Composition - Aug 3, 2021When using the Python plugin to add an existing level as a streaming level, the editor crashes. It seems that this happens regardless of what level is added or what the contents of that level are. A ...
SteamVR turns off vsync globally
UE - Platform - XR - Feb 21, 2020Additional Info From User: Result: Vsync will get turned off by FSteamVRHMD::Startup() setting a global console variable, regardless of your project configuration. Expected: Vsync is only deacti ...
The Lyra's Readme.md from Github is not clear on how to setup the project for usage
UE - Gameplay - Feb 13, 2025The Lyra's Readme.md from Github is not clear on how to setup the project for usage. Following the https://github.com/EpicGames/UnrealEngine/blob/ue5-main/Samples/Games/Lyra/README.md instructions a ...
Static shape components need to have Dynamic Obstacle set to actually use Area Class
UE - AI - Navigation - Nov 17, 2020Many licensees like to use ShapeComponents as blocking volumes instead of proper volumes, as they can be more easily placed and sized in the editor. The docs and code make it sound like it is possib ...
StreamableManager does not apply CoreRedirects to loaded paths
UE - Framework - Jun 12, 2025When loading soft object paths directly, it applies any important CoreRedirects by calling the function FixupCoreRedirects if the initial load attempt fails. In the repro steps, this will apply this ...