Rashaad's conversation about his past triggered, but when I said "That's enough reminiscing," and the conversation ended, it would then begin again, and again and again (it was akin to being harrassed by Noober, except he could trigger the conversation from across the map). It got to the point where I had to kill him to stop the bug.
Also, Dorn Il-Khan appeared during a bandit ambush, but vanished during the fight. I went back to the Friendly Arm to see if he was there, and he wasn't. I think he disappeared from the game, but if that was how it was meant to be, I guess it's not a bug. I'm going to say it is a bug though, because on my previous runthrough Dorn Il-Khan talked to me after helping kill the bandits, and didn't just vanish from the game world.