Yeah, they need to fix this. The group finder should look at what list of dungeons is available to ALL members of the group and roll a random from there, rather than not roll at all.
Because now, if one group member has IC and another has SotH, who do you make group leader?
And OP: If you queue by yourself, then the group finder will not have a problem placing you into a group for the vanilla dungeons only. It's just when you are already in a partial/full group where different players have different access that you encounter this problem.
