In my project, some MIDI tracks are automatically arming themselves after the transport/playback stops. If I disarm a problem track then start & stop playback, the track instantly re-arms itself.
This issue has cropped up many times during this project and it’s more annoying than actually troublesome… i.e. if I dupe the track then delete the original track, the behavior doesn’t occur with the new track.
The same thing correctly happens when the “Solo Record In MIDI Editors” preference is enabled and I have a track opened in an editor, and I do routinely have the “Solo Record In MIDI Editors” prefernce enabled, but in the case of the problem tracks, no MIDI editor windows are open.