After doing a mission and waiting for haven to load for the 15th time, I decided to take a shortcut and hit "M" to bring up the mission screen while haven was loading, and started a new mission.
As a result, I did not see the mission reward screen for the previous mission, and had no confirmation if the rewards were registered properly.
I think it would make more sense in general to put the mission reward screen at the ending elevator rather than showing it after you load back into haven.
On that point, why do you load back into Haven at all? If the point of the Ready Room is to allow players to skip loading Haven if they just want to go straight into a mission, then shouldn't that be the default place you go back to at the end of any clockworks run?