Version: 50.0.2657.0 (Official Build) dev (64-bit)
OS: Ubuntu 14.04

What steps will reproduce the problem?
1. Go to https://register.growtix.com/e/silicon_valley_comic_con.
2. Fill in name, address, etc. with autofill.

What is the expected output? What do you see instead?
Payment information should be able to be autofilled. The dropdown list of available credit cards does not trigger.