[Affected versions]: Nightly 53.0a1 , Aurora 52.0a2 [Affected platforms]: Windows 10, Ubuntu 14.04 [Prerequisite]: Save one username entry on facebook.com [Steps to reproduce]: 1.Go to https://www.imdb.com/registration/signin and select "Sign in with IMDb" 2.Click on Email field 3.Fill email field 4.Fill password field 5.Click "Sign in" and save entry 7.Clear email field 8.Click on Email field [Expected result]: Step 2: Email field should be empty Step 8: The autofill dropdown should be displayed and should contain the user saved on IMDb site and the key icon [Actual result]: Step 2: A dropdown with the username used for facebook.com login appears Step 8: The autofill dropdown is displayed and contains both users (saved on facebook.com and IMDb.com) and the key icon is missing