Cookie cleaning doesn't reliably work

Many times cookies that appear in the Options -> Cookies section are not identified when the Cleaner is run. If I only check "Cookies" in the Windows and Applications tabs and then run Analyze, no entries appear, although cookies are still listed in the Options section.

Bleachbit, however, when given the same instructions (find only cookies) finds the cookie files and deletes them.

When you click once on one of the cookies that doesn't delete in the 'cookies to keep' list, what icon shows at the bottom of the column?

Please ensure you have Multimedia - Adobe Flash Player ticked in the CCleaner options.

Also, make sure your browser is closed.

Failing those two things working, please list your Windows Version, CCleaner version and Browser.