Facebook is most likely storing your session elsewhere, this could either be in localStorage or within IndexDB. I had a quick look at it and it seems to me that they at least store your user id, in IndexDB and the last time your session was checked.
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Facebook is most likely storing your session elsewhere, this could either be in
localStorage
or within IndexDB. I had a quick look at it and it seems to me that they at least store your user id, in IndexDB and the last time your session was checked.