UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.24 Safari/537.36

Steps to reproduce the problem:
1. Go to http://leaverou.github.io/multirange/ 
2. Inspect the element matching: input[type="range"].multirange.ghost
3. Observe the CSS custom property --track-background in the Styles panel

What is the expected behavior?

What went wrong?
The icon to edit a timing function appears next to --track-backgrond value even though the value IS NOT a timing function (it's a linear gradient). The timing function editor appears when clicking the icon. 

DevTools parsing the value probably gets confused by the word "linear".

Did this work before? N/A 

Chrome version: 52.0.2743.24  Channel: beta
OS Version: OS X 10.11.5
Flash Version: Shockwave Flash 22.0 r0
 

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	Screen Shot 2016-06-08 at 9.23.22 AM.png 75.4 KB View Download

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	Screen Shot 2016-06-08 at 9.23.41 AM.png 147 KB View Download