Sorry if it's been mentioned, but it's driving m insane - I've successfully built basic trader, bar and doctor stalls at Sanctuary, and the settlers I've assigned spend a lot of the day standing at their stall, cleaning the counter and so on. My weapons stall, though... Whichever settler I assign to run it never, ever stands at the stall. I've moved it, made sure there's plenty of space around it, deleted and rebuilt it in many different places, but they just won't stand there.
The really odd part is that anybody assigned to that stall spends the entire day standing motionless in the melon patch out the back of my main building. If I then assign a different settler to the weapons stall, they make a bee-line for the melon patch as well. Half my settlers ended up there until I reassigned them farming roles just to get them to move.
What's going on?