Hi @styles
Welcome back to the forum.
We are aware of an issue in ONYX 4.30.1274, where the dropdown Grand Master control situated in the top title bar is not functioning. The physical Grand Master, and the Grand Master in the virtual console window, function correctly. This issue is logged as ONYX-1116 on our system, and has been fixed in the latest public beta.
If you would like to try the public beta, this is available from the link below…
Onyx Beta 4.31.1300 (RC3) - ONYX / Onyx Betatest - Obsidian Control Systems
Please let us know if you have any questions.
Edward