HP OfficeJet Pro 8000 Password WTF

WARNING! If you have an HP OfficeJet Pro 8000 and want to secure its web-based mangement interface, please note that it will only accept 15 characters for the password. If you enter more than 15 characters, the additional characters will be ignored. If you enter the additional characters when attempting to log in, you will be unable to log in. This leads to an utterly maddening scenario wherein the user enters a password and then attempts to log in with the exact same password, but the damn thing rejects it.

This is NOT MENTIONED ANYWHERE on the password change page. WTF, HP?