Chrome Version:69.0.3457.2
OS: Windows 10,Mac 10.13.4 & Ubuntu 16.10

Steps:
-----
(1) Launch chrome
(2) Navigate to You.dj
(3) click on 'Fullscreen' square icon beside --bpm & site displayed in full screen mode
(4) Observe screen alignment

What is the expected result?
Site details should be aligned middle of the screen & spaces should be seen 2 sides (left and right)

What happens instead?
Total site is aligned at left hand side.

Bisect info:
----------
Good-69.0.3446.0
Bad -69.0.3447.0 

Change log:
----------
https://chromium.googlesource.com/chromium/src/+log/69.0.3446.0..69.0.3447.0?pretty=fuller&n=10000

Note:
-----
1. Unable to provide bisect with new bisect tool as we are seeing errors while executing the script.
2. No issue seen on chromium builds.
3. No issue seen on stable-67.0.3396.87 & beta-68.0.3440.25 builds
4. Issue also seen on firefox browser
5. Unable to find the exact suspect from the manual change log from omahaproxy. Hence marking it as 'Untriaged' to get it addressed from dev team.

Please find the attached screencasts for reference.
Thanks..!

 

Deleted: Good build.mp4 5.5 MB

	Good build.mp4 5.5 MB View Download

Deleted: you.dj fullscreen.mp4 6.0 MB

	you.dj fullscreen.mp4 6.0 MB View Download