I am an Apple developer and I have a machine that I test on now running MacOS Mojave. Roon will not start because the OS is preventing it from running due to the fact that the application wants to use accessibly features.
I was wondering what accessibly features is it trying to use? I do not remember being asked about that before.
I would argue that it is not a waste of time to test betas of new major macOS releases. What @Bob_Fairbairn1 found is exactly why I say that. If Apple changed something that will affect Roon, it may very well show up with the early betas and would give your engineers the most time to address it.
I had the same experience (.i.e. access to accessibility) . Not just with Roon but a few apps. I’m also seeing an occasional crash on startup with Roon and sending in the crash reports.