Foggy Mirror

I’ve been trying out the mirror patch, which works wonderfully, but when I tried to fog my objects, they dont fog in the mirror, typing this I suddenly wonder if its because of camera distances being different between the mirror and the “real” image? The mirror is the ground plane seen in http://vvvv.org/show_image.php?id=3053&thumb=1

So maybe bug, maybe not!
If not is there a way to make it work?

Cheers

Cat