When I accept a mission the Quine only shows it until I take off. After the next landing all missions disappear from the Quine regardless if they are finished or not. The missions only disappear frome the Quine, during the flight I can still see them on my mission screen.
When I have 3 open missions, the the Quine says "0 active missions" and the mission computer sais "your schedule is already full". This is a little bit inconsistant.