Bug with edit button and arranger track

If I have the arranger track selected and hit the ‘edit’ button on the CC121 it doesn’t open the arranger window in the same way that it does if I click the edit button on the screen. Instead if switches back to the last audio/midi channel I was working in and opens the editor for that channel.

Is this a general problem, or is something messed up on my system. I’d expect the edit button on the CC121 to always do the same as clicking the edit button on the currently selected track