I have observed this behaviour today with the assignment "Federation Junior Tactical Officer Cadre".
In the progress tracker the outcome was displayed as a "critical success" and the reward was supposed to consist of three doffs (two common and one uncommon). Collecting the reward has added three common doffs with different names to the reserve roster (doff names logged in the chat window were matching this time). Afterwards the progress tracker was showing three completely different doffs in the log section for the mentioned assignment again.
EDIT: There is a missing "not" in the thread title.
I noticed this as well, I had 2 recruitment assignments done back to back, and I kept clicking between them, the officers it displayed were different each time I clicked back to it, but when I collected the assignment, had different guys in it again. I think what it is showing in the assignment tab is possible combinations, not the actual combination, which needs to get fixed.