UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.62 Safari/537.36

Steps to reproduce the problem:
1. Right click on an element on any page and choose "Inspect"
2. In the style editor, add a new property normally delimited by a space, but delimit it with a period, (e.g., "word.spacing", or "font.weight")
3. Give it a value appropriate for the property

What is the expected behavior?
An error will be displayed in the Developer Tools for an "invalid property name".

What went wrong?
The property's value isn't set on the element (see screenshots), and neither the property name or the property value displays an error in the developer tools.

Did this work before? N/A 

Chrome version: 67.0.3396.62  Channel: stable
OS Version: OS X 10.13.4
Flash Version:
 

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	Screen Shot 2018-06-03 at 13.51.49.png 99 KB View Download

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	Screen Shot 2018-06-03 at 14.02.04.png 114 KB View Download