https://imgur.com/a/I3tGrio
'multiplayer profile troop male' is shown in quest dialogue instead of Mountain Clansmen. This results in follow-up dialogue options being hidden, and the menu can't be exited, forcing the player to close Warband and reload an earlier save. I don't know if this bug applies to other lair enemy types like Forest Bandits.
AWoIaF version 4.3.4 from ModDB.
Another bug involves any relations boost with an NPC after completing or advancing a dynamic quest: https://imgur.com/a/ooPSBBN
The relations boost does still work, it's just buried by the script error and takes a while to show up in the log.