Can someone tell me if there is a sync setting or other which one can accidentally change as I have group tracks in Cubase 12 which I can see in the visibility inspector in the MIXCONSOLE and the mixer itself, however I cannot see it in the visibility inspector in the Arranger window and there is nothing there to select to make these group tracks visible?
Yeah it is a bit weird. MixConsole Channels like Groups and FX aren’t initially available in the Project Window. If you toggle the Automation button on those Channels on & off (no need to actually automate anything) it will force those Channels to become available in the Project Window.
This is because the Groups folder, FX Channels folder, VST Instrument folder are a system folders, not the folders created by the user. Therefore they are not visible.