good addon but i found one bug ive got http://ftp.acc.umu.se/mirror/cdimage.ubuntu.com/releases/18.04/release/ubuntu-18.04-server-amd64.iso bookmarked as i use it to test my net speed. but this addon doesent delete the cookies from this domain, probably because it never opens a tab
edit: to developer, it seems to set 2 cookies that FMN doesent deal with, see https://i.imgur.com/Uy1phoC.png
Thanks for your review. I've just tested that link, and it doesn't set any cookies (I've inspected the HTTP headers). Are you sure you actually get cookies from it?
In any way, manually running cleanup or running the cleanup on startup should remove cookies that don't get caught by the domain leave.
