CC121 Controller suddenly has stopped following track selection. Using Cubase 12 on a windows 10 system, this controller has been working perfectly until suddenly the controller only affects 1 track within a project. It either controllers a track on the top of the session, or the last output. All buttons work perfectly fine, and the fader - but it locks to one track in the session and can not respond to any other track.
Connecting to a duplicate rig, the controller will follow the track selection perfectly fine. Any insights would be greatly appreciated!