Nothing seems to draw out the ire more than pet peeves with your password manager. I still vividly recall the issue that made me leave 1Password in a huff to start using Bitwarden.
I don’t self-host, and I’m satisfied with the UX—it just does what it needs to.
One thing I’m not a fan of—-new features. Or the drive to add new features, without extraordinary care. I much rather use slow and boring for my password manager than deal with _woops, I did it again_ development.