I've started a few playthroughs on 1.1.0 and have had a recurring issue with and without using mods. At some point an army of faction I'm currently playing will either lose a siege defence or a multi-army siege offence and I get notifications that lords of my faction will be imprisoned by my own faction. I ended up with -100 relations with all of them. I'm not 100% sure what is happening as I'm usually on other side of map when this happens. Had this happen in both sandbox and story mode.
Currently playing Southern Empire/Sandbox and it happened. Previously Battania. Addtitionally, not getting Renown or Influence while in armies or when helping or being helped by other lords/ladies as has been discussed by Flesson and Ananda. They are listed in post battle screen, but renown doesn't actually increase on clan screen or influence on respective screens/panels.
Hopefully my minor input adds something to knowledge base. Probably not.