Is anyone else having problems with this feature?
I've come to discover that Delete after X minutes doesn't really work with Safari either. When Cookie is in the foreground, Delete after X minutes works perfectly. However, when in the background, cookies accumulate for your entire browsing session. Then, when you switch to Cookie, you can see all of the dozens/hundreds of cookies you've collected. If you then wait the specified number of minutes, Cookie then deletes what you've accumulated. In other words, Delete after X minutes doesn't work if Cookie is in the background, only when active in the front.
Is there something else I should be doing? I purchased Cookie for this specific feature.