UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36

Example URL:
https://codepen.io/anon/pen/dvZedZ

Steps to reproduce the problem:
1.) Browse to https://codepen.io/anon/pen/dvZedZ
2.) Click the select list
3.) Move your mouse over the other options

What is the expected behavior?
The hovered text changes to red, and the hovered background changes to black

What went wrong?
The styles stayed the same

Does it occur on multiple sites: N/A

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 57.0.2987.98  Channel: n/a
OS Version: 10.0
Flash Version: 

Works in IE 11 and Edge