UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.59 Safari/537.36

Steps to reproduce the problem:
Don't know

What is the expected behavior?
Developer Tools should exit when its tab is closed.

What went wrong?
There is a Developer Tools process running, but the tab it was associated with has been closed. It uses 100% CPU and cannot be closed without exiting chrome.

Did this work before? N/A 

Chrome version: 54.0.2840.59  Channel: stable
OS Version: OS X 10.12.0
Flash Version: Shockwave Flash 23.0 r0
 

Deleted: Screen Shot 2016-10-20 at 11.08.40.png 252 KB

	Screen Shot 2016-10-20 at 11.08.40.png 252 KB View Download