I just noticed in my current playthough a few npcs in Whiterun are behaving strangely. I estimate it to be about six or so. Not all npcs in town are affected as some are still doing their routines. The issue isnt that they are frozen like what is commonly reported. They just wont leave their houses. So instead of getting up and going to their stalls to sell wares or standing in front of that Talos shrine and screaming like an idiot all day, they just sit in their house drinking and eat and stirring pots etc. They arent frozen, just stuck in the idle ai behavior in their homes. Yeah i have a few mods, but im level 15 so quite a ways into the game and i havent changed any of the mods since the start and this just started occurring.