It's COOP, and U R in the "pilot" slot... So:
1) In the COOP mode, one player can take place only of the one crew member at the time. Beleive, you understand that Nav/Bbdr and Gunner are the same person?
2) The "switcher button" [C] moves you between your's and main second player stands, and it works only because youre alone in the multicrew
3) Main second player position is Nav/Bbdr, NOT the Gunner
4) If you take Nav/Bbdr slot on the mission start and use "switcher button" [C] you will jump between navigator cockpit and gunner turret without any problem.
5) In the multicrew (coop) mode, you play alone and thats why you have this "near-bug" option to move between other players slots;
** Yes, "switcher button" works different offline(single mission)/online(dogfight) and online(coop), but only because new multistand-multicrew COOP functions are: one-real-human-stand = one-real-player-slot
** the only current "bug", it's a possibility to moves between other players places in some kind of "single-multicrew" mode, like you do... Find the crew members, and you'll be OK
