Horse Suffocation

it was on a private server with me and my cousin and it was late so we got off and shut down the server......the next day i logged on and the horse was suffocating in a wall....im thinking that it was kinda like the bug where the horse suffocates but when a server is shutdown if the horse is in the wall it suffocates when the server starts and the chunks get loaded it counts as way in the wall and suffocate please fix this bug. Thanks, Phatboy2000