Chrome Version:67.0.3396.19/10575.17.0 dev channel Daisy,Candy,Reks
OS:Chrome OS

What steps will reproduce the problem?
(1)Open www.youtube.com and play any video
(2)Open Devtools/Audits tab >> Run audit for 20 sec
(3)Cancel the audit and observe

Expected: After cancelling the audit,page should be restored to normal mode
Actual: Instead,after cancelling the audit,page didn't restored to normal mode 

Attached the screencast for reference..

Raising the issue as a Non-Regression issue seen from M-67

Note: Issue is not seen in Linux,Windows OS

@pfeldman : Please confirm the issue.
 

Deleted: Actual.mp4 17.3 MB

Actual.mp4 17.3 MB Download