(Sponsored Dire Marsh) The game keeps defaulting to Perimeter after runs

When playing the recent Experimental Queue (Dire Marsh Sponsored), sometimes the UI default itselfs to Perimeter. Many times after a run on Sponsored Marsh, I find myself spawning on Perimeter without changing anything myself.

I'm not sure what triggers it, if it's after successful exfils and quitting the auto squad fill with the previous squad or not.