Chrome Version : 71.0.3578.62 (Official Build) b1fa6dee27746dd62414ffad95ea3a7acf51ef16-refs/branch-heads/3578@{#760} 64-bit
OS : Mac(10.13.6, 10.13.1, 10.14.2)

Steps to reproduce:
1. Launch chrome and Click on three dots and open Wrench menu.
2. Click on Full-screen option  to make browser in fullscreen mode.
3. Again click on Full-screen option to exit full screen mode.
4. Observe the traffic lights of browser.


Actual Result   : Traffic lights of browser gets overlaps on first tab in browser.
Expected Result : Traffic lights of browser should not  overlap on first tab in browser.

This is a regression issue broken in M-70 and below is the bisect information:
Good Build : 70.0.3503.0 (Revision : 578160)
Bad Build : 70.0.3504.0 (Revision : 578510)

You are probably looking for a change made after 578333 (known good), but no later than 578334 (first known bad).
CHANGELOG URL:
The script might not always return single CL as suspect as some perf builds might get missing due to failure.
  https://chromium.googlesource.com/chromium/src/+log/bcb7db78edc13f57577f0a9562c98918bdcc10ae..67d21d10815fe6d87d1785a65a50fbc386e6605b

Suspecting: https://chromium.googlesource.com/chromium/src/+/67d21d10815fe6d87d1785a65a50fbc386e6605b

@ellyjones:Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.	

Kindly refer the attached screencast.

Thank You!
 
 

Deleted: actual-traffic.mov 11.9 MB

	actual-traffic.mov 11.9 MB View Download

Deleted: expected_traffic.mov 9.3 MB

	expected_traffic.mov 9.3 MB View Download