@brandonvault: Thanks for the report. I am unable to reproduce the above issue on Mac 10.11.3 with chrome version '49.0.2623.87' with the steps provided by you.
I would request you to please try the above issue by creating a new user from chrome://settings and let us know if the issue still persists.

Attach is the screen-cast for the same.

Thank you!

Deleted: Retest-593419.mp4 8.6 MB

Retest-593419.mp4 8.6 MB Download

@ashjole:

I created a new user, and the bug still exists using the new user profile.

Just to confirm, this is video only, right? Is the normal fullscreen okay?

Oh snap...

It is an issue with fullscreen on any page.

New screencast: http://cloud.brandonthompson.net/2K0Q3G1n0j2W

Notice the spinning ball, and lag.

Sorry, I should have tested that, but I don't usually use fullscreen for anything other than videos.

Any ideas? 

No worries, recently we switched into using the OSX's system fullscreen so it looks like the system fullscreen is having issues.

The spinning ball and lag is unusual...the delay might be the causing the layout issue at the normal fullscreen. I'll have to try some things out to be sure.
Can you check to see if the fullscreen in other applications have a similar behavior?
Thanks!

Safari's fullscreen works without any issues.

Great, thanks! I'll investigate this issue.

Thank you for providing more feedback. Assigning to requester "ashejole@chromium.org" for another review.

For more details visit https://sites.google.com/a/chromium.org/dev/issue-tracking/autotriage - Your friendly Sheriffbot

Assigning back to spqchan@

 Issue 595350  has been merged into this issue.

I'm able to replicate the browser (not video) fullscreen issue by deliberately slowing down the fullscreen transition, which triggers a race condition.

I'm unable to replicate the tabs cutoff issue, but I think I have an idea why that might be happening. A quick question in regards to the cutoff, does the UI fixes itself if you open a new tab?

OK, good news and bad news.

Bads news: No when you open a new tab, the new tab was cut off as well.

Good news: The issues fixed itself, perhaps as a result of a system reboot.

 Issue 597502  has been merged into this issue.

 Issue 597501  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/38ac6be27a783853f6a8fec136d2f4d3235a34d6

commit 38ac6be27a783853f6a8fec136d2f4d3235a34d6
Author: spqchan <spqchan@chromium.org>
Date: Fri Mar 25 22:12:53 2016

Fixed a fullscreen race condition on OSX

Ensure that |windowDidExitFullscreen| gets called after the fullscreen
transition is completed. Slightly speed up the animations on Yosemite.

BUG= 593419 

Review URL: https://codereview.chromium.org/1813693003

Cr-Commit-Position: refs/heads/master@{#383381}

[modify] https://crrev.com/38ac6be27a783853f6a8fec136d2f4d3235a34d6/chrome/browser/ui/cocoa/browser_window_controller.h
[modify] https://crrev.com/38ac6be27a783853f6a8fec136d2f4d3235a34d6/chrome/browser/ui/cocoa/browser_window_controller.mm
[modify] https://crrev.com/38ac6be27a783853f6a8fec136d2f4d3235a34d6/chrome/browser/ui/cocoa/browser_window_controller_private.mm
[modify] https://crrev.com/38ac6be27a783853f6a8fec136d2f4d3235a34d6/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.h
[modify] https://crrev.com/38ac6be27a783853f6a8fec136d2f4d3235a34d6/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm

Requesting merge for the submitted CL along with https://codereview.chromium.org/1850313002 (which fixes a dealloc issue introduced from this CL)

[Automated comment] Less than 2 weeks to go before stable on M50, manual review required.

Merge approved for M50 (branch 2661). Pls go ahead merge.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/537895984fa99ea4939e7f810581d7f19c18c7a1

commit 537895984fa99ea4939e7f810581d7f19c18c7a1
Author: spqchan <spqchan@chromium.org>
Date: Mon Apr 11 22:51:07 2016

Fixed a fullscreen race condition on OSX

Ensure that |windowDidExitFullscreen| gets called after the fullscreen
transition is completed. Slightly speed up the animations on Yosemite.

BUG= 593419 

Review URL: https://codereview.chromium.org/1813693003

Cr-Commit-Position: refs/heads/master@{#383381}
(cherry picked from commit 38ac6be27a783853f6a8fec136d2f4d3235a34d6)

Review URL: https://codereview.chromium.org/1876313002 .

Cr-Commit-Position: refs/branch-heads/2661@{#556}
Cr-Branched-From: ef6f6ae5e4c96622286b563658d5cd62a6cf1197-refs/heads/master@{#378081}

[modify] https://crrev.com/537895984fa99ea4939e7f810581d7f19c18c7a1/chrome/browser/ui/cocoa/browser_window_controller.h
[modify] https://crrev.com/537895984fa99ea4939e7f810581d7f19c18c7a1/chrome/browser/ui/cocoa/browser_window_controller.mm
[modify] https://crrev.com/537895984fa99ea4939e7f810581d7f19c18c7a1/chrome/browser/ui/cocoa/browser_window_controller_private.mm
[modify] https://crrev.com/537895984fa99ea4939e7f810581d7f19c18c7a1/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.h
[modify] https://crrev.com/537895984fa99ea4939e7f810581d7f19c18c7a1/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm

Tested the issue on Mac 10.11.3 using chrome version 50.0.2661.75 and reported version 49.0.2623.87 with the steps below

1. Go to any youtube video 
2.Enter full screen and exit
3.Tried the same on new tab as well

But unable to find the exact issue.Please find the attached screen cast and confirm anything missed here
spqchan @ Please suggest to verify the fix from test team end.

Thanks,

Deleted: 593419.mp4 2.4 MB

593419.mp4 2.4 MB Download