Chrome Version: 66.0.3355.0 (Official Build) canary (64-bit)
OS: MacOS X 10.13.3; also reproduced on Chrome OS

What steps will reproduce the problem?
(1) Navigate to https://www.ticketmaster.com/member/order_history
(2) Attempt to login using the credentials saved in Chrome's password manager.

What is the expected result?
The password manager should offer my saved credentials.

What happens instead?
The password manager detects this as a sign-up form, and offers to generate a password for me. I have to fall back to manual inspection of chrome://settings/passwords to retrieve my credentials. There is no lock icon in the omnibox allowing me to manually override.