Sorry maybe i didnt explain myself
So this is the list of events that produced the bug
1 - Join a static room
2 - Crate a dynamic game room with autojoin
3 - Create another dynamic game room with autojoin
this is where the bug came out.
The room is created correctly, and the user joins it and leaves the previous room (which gets destroyed).
The user on the admin panel appears in the users list of the newly created room.
Other users can join, and things work perfectly for them, but the original user (the one who created the room), has callbacks from SFS (I tried a few, amongst them: onJoinRoom, onUserJoin...) without arguments.
The function is called, but no arguments are sent with it.
The workaround I found is, after joining the game room, before creating and joining the second one, to join again the static room...
If I leave the dynamic room and destroy it, joining the static room, I can then create another dynamic room and join it without any malfunction...
I hope I wrote clearly enough

wisdom
P