Looks like Mac OS is not giving back the focus to the SU window. Once you click in your Vray window, you have to force giving the focus to another app to then give back to SU.
I mentioned the way SU for mac works in a thread couple weeks (months?) ago.
(it was about web, and I talked about pro, but still applies)
Basically, all the windows in SU for mac are separate windows. to make it simple, some are principal, like the modelling window, some are secondary, like the toolbars.
Clicking on a secondary (toolbar…) should put the principal modelling window in focus. looks like your Vray window takes priority until you change software and come back.
I wonder if it could be Sonoma related, since it’s essentially a macOS behaviour, and none of the vray-mac users have noticed this until now.
Anyone on Ventura or Monterrey to confirm ?
If you choose to rollback to ventura (see other thread and MP), you’ll see if this persists.