So logging in today, I got a bunch of common and a few uncommon Duty Officers on some of my characters, but not on others. I then remembered that it was on the ones that didn't get the initial cadre in the early levels. Hopefully that means that bug is gone now for newer characters. I guess I'll find out when I start leveling up a Klingon Recruit!
(I'm a PlayStation player, so we just got the new recruitment event today.)