EDITED I believe this issue concerns several unique vendor objects, such as market stalls, from various packs. The following objects are no longer functional/interactable and don't spawn a vendor...
Ideas
The food stall located in New Appaloosa in Chestnut Ridge never opens in my game either. It's permanently closed throughout all seasons. I've had this problem ever since the Horse Ranch expansion pack released. I don't have any mods installed.
