Unreal Engine Issues
Unreal Engine Issues
Parameter metadata not accessible if modified in Material Instance and then converted to CustomPrimitiveData
UE - Rendering - Architecture - Materials - Jun 24, 2026There’s a potential issue with some changes we made to UMaterialInstance::GetParameterValue (https://github.com/EpicGames/UnrealEngine/commit/8f2bebb008ba645f5938da844cd46b0925322b13). It seems as t ...
Crash when launching Google VR project
UE - Platform - XR - Dec 12, 2016Attempting to launch a packaged Google VR game on android causes the game to crash. This has occurred on two other devices. This occurs in Main as well as Dev-VR. ...
GoogleARCoreJavaHelper functions are not correctly exported publicly
UE - Platform - XR - Oct 31, 2018The jni functions in GoogleARCoreAndroidHelper.cpp are not correctly exported, when we tried to build a Test project it failed with this exception: java.lang.UnsatisfiedLinkError: No implementatio ...
GetUniqueBuildID should use GetLocalNetworkVersion for default value
UE - Automation Test - Nov 13, 2018See https://udn.unrealengine.com/questions/466694/index.html GetUniqueBuildID() was changed in 4.20 so the value returned by default was the same as the network version. However FNetworkVersion::Ge ...
Noise Node Fails to Compile With Voronoi Noise if Ray Tracing is Enabled
UE - Graphics Features - Jul 19, 2019Noise Node Fails to Compile With Voronoi Noise if Ray Tracing is Enabled. Working as expected in 4.22 CL# 7053642 Found in 4.23 Preview 2 CL# 7321677 and 4.24 CL# 7437539 This is a regression ...
Landscape that has tessellation enabled sometimes doesn't render in cooked build
UE - LD & Modeling - Terrain - Landscape - Jun 18, 2020If a landscape uses a material that has tessellation enabled. Then in Editor and PIE things render correctly. But in a cooked package we sometimes hit this check. check(!bCurrentRequiresAdjacencyI ...
Mesh particles are inadvertently culled when NiagaraActor scales large
UE - Niagara - Feb 5, 2025When a large scale value (e.g. 500) is set on the NiagaraActor, the mesh particle is unexpectedly hidden. This may be a side effect of the following change ([Link Removed]). PrimitiveData.NonUnifo ...
LIVE: Deleting a folder in the content brower shows unrealted assets
UE - Editor - Content Pipeline - Content Browser - Aug 25, 2014User Description: Upon deleting a subfolder in the content browser, your currently open folder displays many objects from other folders as well. Summary: Deleting a folder will cause the content b ...
Adding Variable to Struct (Exposed on Spawn) breaks SpawnActor functionality without error/warning
UE - Gameplay - Blueprint - Aug 16, 2018Adding a variable to a Struct used with SpawnActor breaks functionality without warning. Workaround: Clear Class from SpawnActor and reassign same class User Cites Blueprint Compile manager as fau ...
Rendered landscape heights for ES31 doesn't match SM5 since engine version 4.25
UE - LD & Modeling - Terrain - Landscape - Jun 4, 2020Switching between SM5 and ES31 views in the Editor shows some small variation in landscape heights. ES31 heights are stored in the vertex with some slight lossy compression so subtle variation can ...