Chrome version : 67.0.3396.10 (Official Build) 5f5009767d16328f4a3c8c4cc6610a7f8bfe0d9e-refs/branch-heads/3396@{#66}(64 bit)
OS : Mac(10.12.6,10.13.1,10.13.5)

Test URL: https://chrome.google.com/webstore/detail/momentum/laookkfknpbbblfpciffpaejjkokdgca?utm_source=chrome-ntp-icon

Steps to reproduce:
1.Launch Chrome and go to above URL and install 'Momentum' extension.
2.Click on browser full screen icon and Right click on installed extension.
3.Now click on 'remove from chrome' and observe.

Actual Result : 'Remove Extension' bubble is seen misplaced in full screen mode.
Expected Result : 'Remove Extension' bubble should not be  misplaced in full screen mode.

This is a regression issue broken in ‘M-64’ and using the per-revision bisect providing the bisect results,
Good build: 64.0.3260.0 (Revision : 514067)
Bad build: 64.0.3261.0  (Revision : 514329)

You are probably looking for a change made after 514116 (known good), but no later than 514117 (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/04f1082efb63369e19ace6dde8b62c8702303b88..6b6e8fe1fcf17e0545c688d1bfda16d6f79fd97e

Suspect: https://chromium.googlesource.com/chromium/src/+/6b6e8fe1fcf17e0545c688d1bfda16d6f79fd97e

@tapted: Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to concern owner.

Note : Issue is not reproducible on Windows(7,8,8.1,10) and Linux(14.04 LTS) OS.

Thank you.
 

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