Youtube full screen mode only shows 1/4 of the video

This is what I see with Youtube videos in Safari when I go full screen:

Only the upper left quadrant of the video screen has content. The rest of the screen is black.

User uploaded file


I have watched other videos in full screen on other websites, and it worked fine.

MacBook Pro with Retina display, OS X Yosemite (10.10.2)

Posted on Dec 9, 2015 5:50 PM

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Youtube full screen mode only shows 1/4 of the video

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