Unreal Engine Issues
Unreal Engine Issues
Editor crash (unhandled assert) when changing blend mode on a material assigned to a Nanite static mesh
UE - Rendering - Features - Nanite - Oct 23, 2026POST LINK: https://forums.unrealengine.com/t/editor-crash-unhandled-assert-when-changing-blend-mode-on-a-material-assigned-to-a-nanite-static-mesh/2764048 POST BODY:Summary Changing a material's Bl ...
Nanite Voxel material with Static Lighting fails shader compile when r.VelocityOutputPass=1
UE - Rendering - Features - Nanite - Oct 16, 2026Engine/Shaders/Private/Nanite/NaniteVertexFactory.ush:959LightMapCoordinateInput = GetTexCoord(Cluster, uint3(Verts[0].VertIndex, Verts[1].VertIndex, Verts[2].VertIndex), Barycentrics, LightMapUVInd ...
Editor crash when an unsupported material domain or blend mode is selected when previewing a Nanite mesh in the material editor
UE - Rendering - Features - Nanite - Aug 27, 2026Fix in UE6: 56133257 This Jira is for 5.8.3 tracking ...
Mismatch in Landscape Layer Weights between Nanite and Non-Nanite Landscapes
UE - Rendering - Features - Nanite - Jul 13, 2026Repro project is available in the additional info URL to save repro time. Disabling Nanite on the landscape, or painting on it (which shows the non-Nanite version of the landscape) reverts the issu ...
Nanite Displacement Bounds Mismatch Causes Floating Terrain Artifacts on Landscape
UE - Rendering - Features - Nanite - Mar 19, 2026Summary When Nanite Tessellation (Nanite Displacement) is enabled on a Landscape in UE 5.7.3, scaling the Displacement value via Multiply nodes in the material graph causes floating terrain ghost a ...
Nanite Skeletal Mesh ignores Hidden Material Section flag
UE - Rendering - Features - Nanite - Mar 11, 2026Unlike non-Nanite Skeletal Meshes, Nanite-enabled Skeletal Meshes do not correctly respond to the Show flag passed via ShowMaterialSection(). Consequently, the Isolate checkbox for material slots in ...
Nanite culling breaks on scaled object with displacement when camera enters displacement area
UE - Rendering - Features - Nanite - Mar 9, 2026Nanite tessellation, only supports calculating displacement in local space and everything gets scaled with the object scale, which is often undesirable. If the camera enters inside the area allocate ...
STAT_StaticMeshTotalMemory increases after repeated loading and unloading of a level containing Nanite static meshes
UE - Rendering - Features - Nanite - Feb 26, 2026The issue appears to be caused by a mismatch in the value returned by GetResourceSizeBytes(EResourceSizeMode::Exclusive) between InitResources() and ReleaseResources(). At InitResources(), the repo ...
Nanite displacement issue when using along non-uniform scaling
UE - Rendering - Features - Nanite - Feb 26, 2026Nanite Tessellation displacement direction is incorrect for landscapes with non-uniform scales. It seems to use the normal from the unscaled landscape, which can result in the displacement causing t ...
Crash caused by a race condition in Nanite::DispatchBasePass()
UE - Rendering - Features - Nanite - Feb 25, 2026Nanite::BuildShadingCommands() launches two asynchronous tasks: ShadingCommands.SetupTask ShadingCommands.BuildCommandsTask BuildCommandsTask is responsible for modifying ShadingCommands.Commands ...