It just says "wrong password" and you'll be guessing at which random character did it cut the password. Luckily sometimes it's just a stupid html verification form that can be disabled in the console and be submitted anyway.

My e-mail provider does this. I wanted to change my password to some 64 character long generated string. It accepted, but I could not log in after that. After a few tries, I found the reason and, after another few tries, also the limit at which it gets truncated: 16 characters! God, how I hate them for this...

Bitwarden is self-hostable and foss, with some unofficial software already out there. Not much opportunity for the company to entrap customers if it went evil.

IMO, for most people it's best to just send them to register at bitwarden. It's less hassle so they might actually follow through, while being infinitely better than what they were doing before.

Thanks, I'll look into it :)

Don't let perfect be the enemy of good.

Funnily enough, I almost said that to the keepass person. But there are some upsides. I've seen people find the separate extension ui easier because it doesn't blend into browser settings.

That's not really the same. But if it works for you, go for it.