Same thing is happening to me in FF and that 'other' browser Harve - although I have only played Blitzes tha last couple days, so I don't know if it is only them, or across the board.
It also launches you randomly as the host, after a few failed tries with other groups. Not sure if that is by design or not.
edit:
also been noticing that when setting up clubs, it allows the game host to launch the game before you are done. This can be really bad.......