Tested the issue on Windows 7 using 51.0.2704.84, latest canary 53.0.2766.0 as per above steps.Observed that while playing a youtube video even when the browser is in full size or not in full size if we click to full screen, the video is playing in full screen mode.

Please find attached screencast and update if anything missed here in triaging the issue.

postres26@Could you please provide actual and expected behavior screencast for further triaging the issue.

Deleted: 619347.mp4 10.3 MB

	619347.mp4 10.3 MB View Download

Here's a link to the video that I've recorded about this bug https://www.youtube.com/watch?v=S44wrzsfWoI

As you can see it changes the video to fullscreen smoothly if the browser isn't in full size or if it's in fullscreen (F11) but if the browser is in full size it looks that weird, looks like it's changing the browser to fullscreen first and then the video to fullscreen, or at least it has the same "animation".

I would also notify if that matters is that i have a 2 monitor setup but it is the same on both of the monitors. This happens on all video files on all webpages but only with chrome, with other webbrowsers it's fine, no buggy.

Support for all options 

Thank you for providing more feedback. Adding requester "ssamanoori@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Unable to reproduce the issue on Windows 7 using 51.0.2704.84, latest canary 53.0.2768.0.Observed that even if the browser is in full size, no weired behavior is seen when played in full screen.
Please find attached screencast.

postres26@Could you please check the issue on clean profile and update your observations.

Deleted: 619347_canary.mp4 4.3 MB

	619347_canary.mp4 4.3 MB View Download

It's the same on clean profile. I even reinstalled the whole Chrome browser but it didn't changed.

Here's the video after i reinstalled the client and tried with clean profile and with old profile too.
https://www.youtube.com/watch?v=ZFLD-uqt6O4

Are there any log files or anything i can provide you to examine it and maybe get some info out of it? If so I would send it too hopefully it'll help.

One more thing that i noticed only at two sites (twitch.tv and animeaddicts.hu). Sometimes if i play the video and go to fullscreen it doesn't go totally fullscreen until i restart chrome. It goes fullscreen only between the Chrome bookmark bar and the system tray. After Chrome restarted it goes to fullscreen "fine" meaning only the weird animation thing stays.

I attached a screenshot and marked this fullscreen's border with yellow.

Deleted: Chrome fullscreen.jpg 315 KB

	Chrome fullscreen.jpg 315 KB View Download

Thank you for providing more feedback. Adding requester "ssamanoori@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Unable to reproduce the issue on Windows 7 using latest canary 53.0.2773.0, latest stable 51.0.2704.103.Observed that even if the browser is in full size, no weired behavior is seen when played in full screen.