Well after running many,many games of AV yesterday and today,I am still getting this bug,fix?
One solution I found,if you can keep aware of your BG Q,is to hold off accepting in,for as long as possible then hit your BG accept macro on all toons.
I doesn't always get you into the same group but it beats the hell out of trying to ask said 12 yr old for raid lead.
Hope this helps