[tbb-dev] Cookie protection does nothing

I have another question, again I am not sure if this is the right place to ask (sorry if I am spamming your development list with unrelated stuff, please tell me where to go with this if this is a wrong place), I cannot figure out if "cookie protections", that appear under Tor button in TBB, even do something and how to make them work. I can't protect (or unprotect) any cookie, nothing I do or select in the table has any effect whatsoever on my browsing. Cookies are never saved, every time I click on "new identity" I am with a clean slate, the table in "cookie protections" is always empty no matter what I do. Is that correct? If it is, why is the option even there, shouldn't it be removed? Karel