It seemed that when the problem happened, corners of video area were rounded. With the following URL, there were cases that corners of video were rounded or not rounded. https://www.youtube.com/watch?v=zCLOJ9j1k2Y
Bug 1849680 Comment 10 Edit History
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It seemed that when the problem happened, corners of video area were rounded. I am not sure yet what causes the difference between rounded corners and rectangle area. Today, on my Win11PC, latest nightly showed rectangle video area, and local build showed rounded corners area. With the following URL, there were cases that corners of video were rounded or not rounded. https://www.youtube.com/watch?v=zCLOJ9j1k2Y
It seemed that when the problem happened, corners of video area were rounded. With the following URL, there were cases that corners of video were rounded or not rounded. https://www.youtube.com/watch?v=zCLOJ9j1k2Y I am not sure yet what causes the difference between rounded corners and rectangle area. Today, on my Win11PC, latest nightly showed rectangle video area, and local build showed rounded corners area.