Client "Hot Join" during started game, and matchmaking servers location

Hi,

I'm using the lobbymanager and HLAPI to create parties.

I have three questions:

-With direct IP, if a player try to join an already started game it just does not work.
With unity matchmaking, once the game is started, the game is still visible in game list, but if a player try to join, it does not work. (also the members count does not update when a client leave a game). Is there a way to do hot join, or is this a normal HLAPI "non - feature"? ( a little specification : All works fine...

Client "Hot Join" during started game, and matchmaking servers location