[Webkit-unassigned] [Bug 222202] New: twitch.tv: when in fullscreen, WebKit continually does 350ms layouts. Firefox and Chrome do not

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222202

            Bug ID: 222202
           Summary: twitch.tv: when in fullscreen, WebKit continually does
                    350ms layouts. Firefox and Chrome do not
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

View a twitch livestream in fullscreen, and open web inspector on another screen. Take a timeline, and look at the layout time.

WebKit continually does very long layouts (longer than 350ms). Firefox and Chrome show no long layouts.

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