Chrome Version: 64.0.3261.0 (Official Build) canary (64-bit)
OS: Mac

What steps will reproduce the problem?
(1) goto https://www.phase-6.de/classic/register/
(2) enter an email address
(3) generate a password
(4) try to create account
(5) cry a little
(6) delete a bunch of characters from the generated password so it's short enough

What is the expected result?

chrome offers to save the short password

What happens instead?

chrome offers to save the too long password