Chrome Version: 69.0.3452.0 (Official Build) dev (64-bit)
OS: Linux

What steps will reproduce the problem?
(1) Log into Github.
(2) Visit https://github.com/martinthomson/http-mice/pull/8
(3) Open the console

What is the expected result?

No autocomplete warnings or warnings only for visible fields. Since autofill shouldn't fill invisible fields anyway lest the user leak data they didn't intend to expose.

What happens instead?

Console output:

[DOM] Input elements should have autocomplete attributes (suggested: autocomplete='address-level2', confirm at https://goo.gl/6KgkJg)
<input type=​"text" name=​"required_field_3d76" id=​"required_field_3d76" hidden=​"hidden" class=​"form-control">​

[DOM] Input elements should have autocomplete attributes (suggested: autocomplete='address-level2', confirm at https://goo.gl/6KgkJg)
<input type=​"text" name=​"required_field_3d76" id=​"required_field_3d76" hidden=​"hidden" class=​"form-control">​