Maybe I wasn't searching as well as I could, but I didn't find this topic in this forum.

I had been unable to complete the "Lost Patrol" quest for Danse. Instructions say to report to him, but I've tried re-joining him, dismissing him, and each time I'm unable to initiate the question completion via dialogue with him.

Instead, you can report to Lancer Captain Kells to complete that particular mission, just FYI.

For me, after the quest, he stands outside the building where you can talk to him there. I had him with me when it happens so that's what I did. Not sure what went wrong for me.

Uh, I just said that in my OP.

I don't see it as a spoiler - we're getting around a bug I suppose.

Sorry. I've been called out on spoiler so many times that I'm a bit paranoid.

I don't know if it is a bug. My companion guide actually says that, if you happen to pick up the quest before you actually meet Danse, that situation will arise and that you'll have to report to the other guy. I found it irritating too, but did as my guide said and now I'm hunky dory. Well, other than the wanton murder of people and beings I actually like, but, hey, you can't have everything.

I had already finished the Fort Strong quest ages prior.

Maybe not a bug, but if the Quest says "see person X", but you really need to "see person Y", it's at the very least unclear.

I usually complete this quest before getting it from either Danse or the BoS ship captain. I just have to turn in the holotags. When I did turn in the quest to the captain, Danse was not even mentioned as someone to report to about it.

If you bring Danse along, he has a lot of stuffs to say at every single location, and Brandis would recognize him and there is option to let Danse talk to him instead. While not required, Danse can become very importance to the quest if you bring him along. You would need to talk to him before turning in the quest for Kells if you bring him along.