It wasn't changed but sometimes (likely a bug) things can spawn even inside work bench radius as you can see here. This base is fully enclosed, it has a wall, a berm, and a dry moat and there is not any where that is not covered by a work bench. Nothing from the outside can get inside but occasionally a deer will spawn inside the base.
https://steamcommunity.com/sharedfiles/filedetails/?id=2860289081