I moved from LastPass to Bitwarden a few months ago. I have configured BitWarden to use my Yubikey second factor authentication key. I have about five different machines that I use, and on each of them I install Firefox and then add the BitWarden Firefox extension.
Only on one of the machines does BitWarden consistently prompt me to put in the Yubikey when I log in to the BitWarden Firefox extension. At least under LastPass, it consistently made me add the Yubikey no matter which machine I was logging in from.
Just now, I added the BitWarden Firefox extension to a Raspberry Pi I’m playing with, and this time, BitWarden prompted me to insert the Yubikey.
That it is inconsistent really bothers me. I want a second factor 100% of the time, not 🤷