Hi, I just found this game yesterday and have been testing it out until now (including reading online guides and this forum).
The only problem I have so far that looks like a bug is that I can't recruit Scout Officer even though I am in correct location and I have the rumor on screen. I have been looking out for that particular Officer since I am playing as Explorer so it seems logical to specialize further.
This happened in 2 separate games, first I ended by suiciding the captain and the 2nd one I noticed that on the same planet in the Palace I have Military officer on offer - maybe this is the cause of the problem? I don't have any problems with other types of Officers.
Current game has only 2 Officers (I took Political so I don't mess up the trade embargoes and I hate checking them every time before I trade) so this is not a slot issue. First time this happened I had 2 open slots. I also have enough money to hire him (her?).