There are definitely services that fuss if you use a password you’ve used before.

-Try to log in, password incorrect.

-Try to log in, password incorrect.

-Try to log in, password incorrect.

-Weird, ok reset password.

-“Enter new password.” Enter the password I’ve been typing the whole time. “Sorry, you can’t use your old password.”

-DAMMIT!

I’m pretty convinced this happens because their password validation isn’t responding quickly enough and it defaults to “password incorrect.”