I hadn’t used Jack with MacOS in a while, but I think I remember it being there. I tried going back through the release notes to see when support was removed - couldn’t find anything in the 3.x release notes, but there’s a post from last year about the Jack sync option missing where the author says they set up 20 channels to be shared with Bitwig. However, I can’t find any option for Jack in my audio prefs.
Will it be re-added at some point?
MacOS 11.6.1, Renoise 3.3.2 Jack 1.9.19.