Chrome Version: <From about:version: Google Chrome 70.0.3538.7>
Chrome OS Version: <From about:version: Platform 11021.6.0>
Chrome OS Platform: <Candy>
Network info: <WiFi>

Please specify Cr-* of the system to which this bug/feature applies (add
the label below).

Steps To Reproduce:
(1) On login screen,connect to a WPA network with invalid passphrase. 


Expected Result:
"Bad Password" notification. 

Actual Result:
We get the correct notification but it flickers. 

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
Always.

What is the impact to the user, and is there a workaround? If so, what is
it?
Minimal. 

Please provide any additional information below. Attach a screen shot or
log if possible.
video @  https://drive.google.com/open?id=0B-aAKM12pbimdGNqd3Z3X1FMQlJVSlZfOXA5dW96RlN1MmdN
logs @ https://listnr.corp.google.com/report/85646999414
For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.