UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.71 Safari/537.36

Steps to reproduce the problem:
1. Create an <input> element inside a wrapper <div>
2. Add a div:focus-within CSS-rule
3. Use Dev Tools to manually set focus to the input element

What is the expected behavior?
The :focus-within CSS rule should apply

What went wrong?
The :focus-within CSS rule doesn't apply.

Did this work before? No 

Chrome version: 61.0.3163.71  Channel: n/a
OS Version: OS X 10.12.6
Flash Version: 

http://jsbin.com/yasitavabe/1/edit?html,css,output