Use the “passwords” feature to check if one of yours is compromised. If it shows up, never ever reuse those credentials. They’ll be baked into thousands of botnets etc. and be forevermore part of automated break-in attempts until one randomly succeeds.
If there’s one thing I’ve always been wary of, it’s the password manager browser extensions. And I’ve been proven right. Don’t be lazy, it takes 30 extra seconds to do it manually.
Pishing detection is nice though, I’ll admit.