I've looked again and found this:
Pooks wrote:...some of my tracks were un-editable and that she hovering over them I got a crossed circle.
...only while global record is on and still running. Same with the reddish background of the three tracks in your srceenshot.
Those three are muted btw., but that doesn't seem to make a difference on my system: As soon as I stop global transport the reddish lanes go back to normal and the Do-Not-Enter-Cursor is gone. Only the recorded samples are shaded (i.e. not playing) but accessible (i.e. normal cursor). until I press Back to Arrangement.
No idea what could be keeping yours locked. Maybe you get in touch with support.