Chrome Version: 55.0.2883.17 dev
Chrome OS Version: Platform 8872.15.0 (Official Build) dev-channel veyron_minnie
Chrome OS Platform: Asus Flip
Network info: N/A

Please specify Cr-* of the system to which this bug/feature applies (add
the label below).

Steps To Reproduce:
(1) Log into ChromeOS and log out
(2) Expire password on corporate account (G Suite, @google.com in this case) and change password
(3) Log in to ChromeOS - the old password works and not the new one

Expected Result:
Logging in with the old expired password throws an error and logging in with the new password succeeds

Actual Result:
Logging in with the old password succeeds and with the new one throws an error

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
So far all the time (password expired recently)

What is the impact to the user, and is there a workaround? If so, what is
it?
This is a security vulnerability that is especially dangerous for business chromebook users

Please provide any additional information below. Attach a screen shot or
log if possible.
Feel free to contact me for questions