This issue reared it’s ugly head again yesterday. Out of the blue, the automation track stays red and not only can you not turn it off, any function you’ve automated is disabled because of it. This is very serious (if not occasional) and requires saving and reloading a project (although even after reloading it will eventually happen again). Very frustrating (and embarrassing with clients)!
I et this one occasionally too. A right royal PIA when it happens (obviously whenever you’re in a hurry). Not been able to find what causes it. I tend to create a new track and copy everything across as the solution but still annoying.