New session with let’s say 8 mono audio tracks, routet to a 5.1-OUT.
Open the Panner-Window and pin it (with the lock on upper right side)
Scroll (with arrow keys) through the audiotracks - the panner should follow your selection.
So far - So fine.
Duplicate one of the audio tracks, let’s say, track no. 5
-> Panner-Window does not follow any more
Even if you close and reopen and re-pin the window, it always stops following when crossing the duplicated track.