Display Bug in Block

This surface displays wrong in shaded modes when it’s part of a block, but it’s normal when exploded.

Render Bug.3dm (102.7 KB)

Rhino 8 SR17 2025-2-12 (Rhino 8, 8.17.25043.10001, Git hash:master @ 384a84c165ff11e0681af87e076dd465f8a325d5)
License type: Commercial, build 2025-02-12
License details: LAN Zoo Network Node

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 64GB)
.NET 7.0.20

Computer platform: DESKTOP 

Standard graphics configuration.
  Primary display and OpenGL: NVIDIA RTX 2000 Ada Generation (NVidia) Memory: 16GB, Driver date: 9-10-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 556.39
    > Accelerated graphics device with 4 adapter port(s)
        - Secondary monitor attached to adapter port #0
        - Windows Main Display attached to adapter port #1

Secondary graphics devices.
   Intel(R) UHD Graphics 770 (Intel) Memory: 2GB, Driver date: 9-13-2024 (M-D-Y).
    > Integrated graphics device with 4 adapter port(s)
        - There are no monitors attached to this device!

OpenGL Settings
  Safe mode: Off
  Use accelerated hardware modes: On
  GPU Tessellation is: On
  Redraw scene when viewports are exposed: On
  Graphics level being used: OpenGL 4.6 (primary GPU's maximum)
  
  Anti-alias mode: 4x
  Mip Map Filtering: Linear
  Anisotropic Filtering Mode: High
  
  Vendor Name: NVIDIA Corporation
  Render version: 4.6
  Shading Language: 4.60 NVIDIA
  Driver Date: 9-10-2024
  Driver Version: 32.0.15.5639
  Maximum Texture size: 32768 x 32768
  Z-Buffer depth: 24 bits
  Maximum Viewport size: 32768 x 32768
  Total Video Memory: 16380 MB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
  C:\Program Files\Rhino 8\Plug-ins\Commands.rhp	"Commands"	8.17.25043.10001
  C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp	"WebBrowser"	
  C:\Program Files\Rhino 8\Plug-ins\rdk.rhp	"Renderer Development Kit"	
  C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp	"RhinoScript"	
  C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp	"IdleProcessor"	
  C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp	"Rhino Render"	8.17.25043.10001
  C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp	"Legacy Rhino Render"	
  C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp	"RDK_EtoUI"	8.17.25043.10001
  C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp	"Snapshots"	
  C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp	"MeshCommands"	8.17.25043.10001
  C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp	"RhinoCycles"	8.17.25043.10001
  C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp	"Toolbars"	8.17.25043.10001
  C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp	"3Dconnexion 3D Mouse"	
  C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp	"Displacement"	
  C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp	"SectionTools"