My bug is "Shadow of Steel." It won't let me board the Vertibird that takes you up to the Prydwyn for the first time. So, here's why I think it's bugged. I've been to Cambridge Police Station, I did ArcJet, I started "Semper Invictus," but I didn't complete it before the Prydwyn first arrives. I hadn't even been back to to the Cambridge PD until long after I'd finished the "Reunions" quest. One thing I have noticed, and this could be nothing but who knows, the music cue isn't the typical BoS music; Like the game doesn't recognize that I'm even at the Cambridge Police Station