Hi! "public_transport=stop_position" is an additional clarifying object that provides info where precisely the bus stops on the road. By itself, it doesn't mean that the bus has a stop around here; it just doesn't work alone. An object with public_transport=platform is required; even if there is no physical platform on the ground. And also, please restore ref=2482, it's the main tag to designate the number of the bus stop, consumers such as Organic Maps use this tag and not the more sophisticated gtfs:stop_id.