Chrome Version: 64.0.3282.144/10176.68.0 Stable channel Daisy,Reks and Kip
OS: Chrome

What steps will reproduce the problem?
(1)Recover Build -> In Sign-in Screen -> Hover mouse pointer at 'Enter your email' text field and observe for 'Please fill out this field' tool tip
(Please refer video)

Note:
1. In Sign-in Screen -> Turn-off WI-FI from Uber Tray -> Now "Network not available" is seen -> click on 'sign in as an existing user' -> Hover mouse pointer at 'Enter your email' text field and observe 'Please fill out this field' tool tip is seen
(Please refer 'Expected_Tooltip'  Video  and screenshot)

2.Issue is seen on M-65 and on latest M-66 also

Expected: 'Please fill out this field' tool tip should be seen on hovering mouse pointer at 'Enter your email' text field in Sign-in screen
Actual: Instead 'Please fill out this field' tool tip is seen missing

This is Non-Regression issue seen from M-62

@wzang: Please confirm the Issue
 

Deleted: Actual_Tooltip.mp4 12.4 MB

	Actual_Tooltip.mp4 12.4 MB View Download