In password security, the longer the better. With a password manager, using more than 24 characters is simple. Unless, of course, the secure password is not accepted due to its length. (In this case, through STOVE.)
Possibly indicating cleartext storage of a limited field (which is an absolute no-go), or suboptimal or lacking security practices.
I heard some banks encrypt single characters of the password separately (no idea how that would be safe) they often ask to provide random characters from the password instead of the entire password.
My bank only accepts up to 20 characters. It doesn’t validate it… The login page simply ignores all characters beyond 20th. So I didn’t even know that it cut my password until I tried to log into the mobile app, which replaces the last character when you type more than 20… that was confusing 20 minutes when I didn’t know why I can’t log into my mobile app.