When not logged in, it keeps asking for saving credentials for sites. When choosing never to save, it will ask the same question again. Only way to stop this is by logging in. Even though I click "Never for this website", it won't remember my selection for certain sites. The second: The auto-fill feature doesn't work properly on certain sites and it's an annoying process to disable it.

Quasiment parfait !
Il manque, à l'image d'autre service du genre, une icône cliquable à côté des inputs afin d'accéder plus rapidement à nos informations de connexion.
De plus les thèmes ne sont vraiment pas terribles..

With the latest version 1.56.6. It keeps locking with every browser restart. When I got the Vault timeout set to "Never". So I downgraded to 1.55.0 and it worked. Never locking on browser restarts.

Really nice extension. It works like a charm.
However, 2FA using Yubikey could be improved. Currently it's checked only once. It could be nice to force 2FA every month for instance or less.

I've been using this add-on for bitwarden in Firefox along with bitwarden free for about nine months now and it works very well to allow me to use unique complicated passwords. I've been gradually changing the passwords for everything I log into and I can get them filled in quickly and easily using the add-in. I've had Firefox as my default browser always and it rarely needs me to retype my master password. That just changed when I temporarily switched to a different default browser(for other reasons) but I'll be switching back to Firefox as default soon. Bitwarden is available on my android phone as well but it's more clunky as I haven't mastered that and don't use it much there. I'm sure I could make better use of it on the phone but I don't really need it there.

In conclusion, bitwarden free is great when used with its Firefox add-on.