Can't speak for your particular coach, but on my previous MH the drivers seat would pivot 3/4 of the way around and no more. My current one goes all the way around. Looks like a design "feature" on some coaches.
Bruce Dickson 2013 Thor Challenger 37GT, 5 Star Tune, Safe-T-Plus Steering Control with Air Trim, Roadmaster front and rear Sway Bars, SuperSteer rear Track Bar, Crossfires, 2018 Honda CRV . Full timers since Jan 2012.