Shadow window setting in Compiz CCSM isn't working?

view full story

http://askubuntu.com – It appears that regardless what I set in the Shadow Window field in Windows Decoration preferences, Compiz ignores the setting and would still draw shadows under windows. What I set in the field seems to only affect other elements like menus and tool tips. Also, I've rid all the shadow tags in the theme I'm using so I'm pretty sure the shadow isn't coming from the theme itself. Is this a bug or by design? (HowTos)