The SOON to be released Pixel 4 (and XL) will not have a fingerprint reader and will instead us face unlock. This face unlock uses a new BiometricPrompt API, but currently, Bitwarden uses the older Fingerprint API so the face unlock will not work. This will be a pain to have to type in your password to get to your vault to autofill your password on a site/app. Can you please modify your call to the APIs and use the new BiometricPrompt API.
In Play Store beta: https://www.reddit.com/r/bitwarden/comments/djp8io/_/f4vbn3j
Just got my Pixel 4 and this is a big issue for me coming from a Pixel 2 XL with fingerprint reader. Would be great to see this feature soon!