UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2837.0 Safari/537.36

Steps to reproduce the problem:
1. open dev tools setting
2. 
3. 

What is the expected behavior?

What went wrong?
Can see Enable CSS source maps but no Auto-reload generated CSS

Did this work before? N/A 

Chrome version: 54.0.2837.0  Channel: n/a
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 22.0 r0