Telika: Apparently i'm not the only one who has lost a recruit upon dismissal. I've left Takayuki behind when hiring Scotchmo, but he never showed up in the Citadel, he isn't where I left him, and isn't where I had originally found him either. Just gone. No big deal, as he was a bit too melee oriented for me, but i can happen with others.
So, better save before dismissing, and go immediately verify the citadel before resuming the adventure...
I'm not sure what triggers the bug. Maybe not having reported his recruitment (but i think i did), maybe having dismissed two characters in a row (dismissed him for scotchmo, then temporarily dismissed scotchmo for that local kid). Haven't tried to reproduce the sequence. But others on the internet have lost Takayuki or another recruit the same way.
So, just. Be a tad cautious around that.
I did that. Hired Scotchmo and dropped the least useful guy. I did notice when I dismissed him, he didn`t walk off. I expected him to start walking off towards the Citadel. That got me wondering if there might be a problem, but I never went back to see.