That bit where Solas winds Sera up about her unexplored innate magical ability because she messed with his things? Mad bants - the kind some people are missing out on in Dragon Age: Inquisition because of a bug.
Some people have ploughed hours upon hours into the fantasy adventure only to be frustrated at the lack of chat between party members as they explore. There are pages of reports - on the EA Answers HQ support forum (via VG247) - of people only encountering a handful of occasions of banter in upwards of 10, 15, 20 hours of play, and longer.
BioWare has acknowledged the problem and is asking for 60+ hour game-saves, in which the player experienced the problem, for research purposes.
The causes aren't known but there's a workaround of sorts that has met some success.