Could you tell me a little bit about Bitwarden? Any glaring cons that you could think of right out of the gate? How is fill on mobile? I'm really liking it so

Could you tell me a little bit about Bitwarden? Any glaring cons that you could think of right out of the gate? How is fill on mobile? I'm really liking it so far (After ~1 minute of research). An open source password manager with a CLI (coming soon https://github.com/bitwarden/cli https://github.com/bitwarden/cli), what's not to love?!