UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.170 Safari/537.36

Steps to reproduce the problem:
1. Right-click on page and select an element to inspect
2. Use the select tool to select an element to inspect
3. The element is not highlighted in the DOM tree in elements panel

What is the expected behavior?
Should expand the DOM tree to the element selected for inspection but does not expand the Body tag. 

What went wrong?
It should highlight the selected element in the DOM tree. 
It doesn't happen every time, but it seems to be happening more times than not now. I have to refresh the page several times before it will work to inspect elements again.

See screenshot attached

Did this work before? Yes Not sure

Chrome version: 66.0.3359.170  Channel: stable
OS Version: OS X 10.13.4
Flash Version:
 

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