The developer of this addon should be ashamed to continue to claim features that have repeatedly been shown to not work and Mozilla should be ashamed for recommending broken garbage.

I am not sure how Mozilla can recommend this.
This extension is broken in so many ways.
There are many thread about failure and inability to delete cookies.
There are also threads showing it is broken when it comes to edit of cookies (can't even change a session cookie to expire on a specific date.
This addon is only good if you want to view your cookies.
This addon is WORTHLESS as a Cookie Manager.
This addon does not allow managing MOST cookies and instead treats them as read only.
This addon is a failure compared to the addons it claimed to be inspired by.
Further the support has been non-existent.

What criteria does Mozilla use when recommending addons that they would recommend this BROKEN and INCOMPLETE excuse for a cookie manager. According to the "Recommended" status Mozilla has reviewed it for functionality. Every person at Mozilla who has installed or even looked at this addon and said it deserves a Recommended status should be barred from any code or review positions for gross negligence and incompetence.