Gnome session in ubuntu doesn't remove top panel in fullscreen apps

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http://askubuntu.com – For instance, in dosbox or wine apps configurated for fullscreen. This is highly annoying. I've noticed that apparently Unity (which i don't use) doesn't have this complaint, probably since Unity is using compiz and not mutter. From the link above i infered that it's related to the feature 'unredirect_for_screen' which is a property to not shape the graphics output when in fullscreen mode. However, allthough mutter has a commit with the same capacity since 3.1 (my version is 3.6 atm), it has no dconf setting for enabling it that i can see. I can only infer that it's done automatically when a (HowTos)