I'm disabling it now. I can't see the benefits, but when I need to login to sites (or re-login after timeout) using my FB account, this plugin blocks the login popup, so I have to disable it temporarily and by doing that it CLOSE ALL my opened FB and Instagram tabs.

Firefox a beau me dire que Facebook est dans le container, je vois bien que le "Partage/Like" sur mon compte est toujours possible depuis les autres onglets.
Inutile, donc désinstallé.
(Testé sur quantum / Win10)

Love it! Firefox's containers are the killer feature that led me to make Firefox the browser I use almost exclusively. And the Facebook container is the one that started it all for me.

Doesn't work very well as I still get targeted ads after looking something up in a different tab.