Chrome warning: Password field is not contained in a form

Created by: sqs

When I visit http://localhost:3080/site-admin, Chrome devtools JS console complains:

[DOM] Password field is not contained in a form: (More info: https://goo.
gl/9p2vKq) <input type=​"password" class=​"copyable-text__input form-control" readonly value=​"...">​