Crossfire and Windows monitor mirroring

Hey guys i have a question for those of you running crossfire, back in 2012 i ran dual HD 7950's and one of the issues i ran into was that i couldn't mirror my monitor through HDMI which is an issue because i wanted to mirror the game image to my capture card for twitch streaming from another PC. It's been a few years now so have they patched that issue? or was it simply something wrong with my setup preventing me from doing that?

EDIT I'm asking because i wouldn't mind picking up two 480's if this is resolved ;)