Cannot launch 2 clients (with PA)

i don't know if this is due to the recent fixes, but since now (exactly after the maintenance this morning) i cannot launch my second client as i am used to. i log in my first account (it has pa), launch the client. i log out and log in second account, but when i try to launch the client i get the same error you get when you haven't got pa: "impossible to run another copy of the game. the game cannot be launched in several windows without pa#.
please fix this, i rather watch a movie from my 2nd pc than box an iss from it. i have paid for the pa, so this should work as it is supposed to.

tried restarting browser, logging and relogging both accounts. still same. then i tried restart and now it works as usual, but this bug is quite annoying.