I'm having issues turning in both "The Lost Patrol" and "Boston after Dark". The similarity between the two is in both cases I had 2 quests to turn into Carrington and Danse.
For Carrington I had stumbled across "Butcher's Bill" and that turned in over Boston after Dark and locked me out of turning in Boston after Dark (I tried the console options, resetting the quest to an earlier point to 're-trigger' talking to Carrington but that didn't work, though I may have messed it up).
For Danse, I finished "The Lost Patrol" while "Semper Invicta" was still active. I was able to turn in Semper Invicta and proceeded through that quest line, through "Show No Mercy" but I still can't talk to Danse to turn in "The Lost Patrol" I'm currently on "Dangerous Minds" for the brotherhood.
Anyone else encounter this behavior?