As I partied up with a friend for a coop match, I usually alt- tab during the long loading times. As the percentage reached 80, I tabbed back to the game. Match starts, I pick my class, didn't edit loadout as it was saved from last game.
Hit deploy about 5 seconds max after I was able to enter the match.
I get a view of the loadout screen without my character while having the UI of a spectator, though I was unable to change camera or players. Top right says waiting for objective to be captured for respawn. My mates were already playing and I had to wait 5 bloody minutes for our assault to fail until I could start playing at last.
As I didn't waste any amounts of time in the loadout screen, I wonder why I was not spawned alongside my teammates.