https://www.reddit.com/r/brave_browser/comments/18wkj9u/forget_me_when_i_close_this_site_is_so/
The “Forget me when I close this site” option is not described nor documented, and it is a clumsy and non-intuitive method to add exceptions to the purge-on-exit operation. I’m not sure Brave even prompts you when you close a site (nor just what “close” means) to alert you to choose to add an exception, or not, or even make you aware that you are adding an exception to the purge-on-exit operation.
I went to Brave issues, and searched on “Forget me” to find:
https://github.com/brave/brave-browser/issues/45632
In a general online search, I found:
That asks why users cannot see the list of exceptions they created when the “Forget me” option is enabled, and they chose to not be forgotten for a particular site. Geez, create hidden exceptions. Just stupid.
With “Forget me” off, enabling per-site is clutzy. You click the Shields toolbar icon, and elect to add the site to an override list (which you cannot view). With “Forget me” on, disabling is a per-site operation by clicking on the Shields toolbar icon, but you can’t see the exceptions list for what choices you’ve made. With “Forget me” on, the only way to remove a site that you previously excepted is to revisit that same site to then click on the Shields toolbar button to unforget that site.
These override and exception lists are stored somewhere for Brave to track them across web browser sessions, but the Brave devs decided not to expose them when they added the “Forget me” option. This just sucks. “Forget” needs to get replaced with a different “F” word.