Viewcapture preview and output in Arctic is full black

Here’s another problem. Viewcapture preview and output in Arctic is full black:.
Happened after I duplicated the Arctic display mode.

and then when switching to the original or the copy I get a black viewport

This is on another machine:
Rhino 6 SR23 2020-2-24 (Rhino 6, 6.23.20055.13111, Git hash:master @ 8106edaa648ba209a8fc587f0f7fcccbaac09169)
License type: Commercial, build 2020-02-24
License details: LAN Zoo Network Node

Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Machine name: AMS-LT167

Hybrid graphics system.
Primary display: Intel® UHD Graphics 630 (Intel) Memory: 1GB, Driver date: 12-10-2018 (M-D-Y).
Primary OpenGL: NVIDIA Quadro P1000 (NVidia) Memory: 4GB, Driver date: 12-6-2019 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 441.66

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 12-6-2019
Driver Version: 26.21.14.4166
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 4 GB

Hi -

Please update to the current SR 25. If you can reproduce the issue in that version, please provide the file and any modified display modes that are involved.
-wim