[Webkit-unassigned] [Bug 199258] Some elements disappear when fullscreen

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199258

--- Comment #5 from Xidorn Quan <xidorn-webkit at upsuper.org> ---
Created attachment 385732

  --> https://bugs.webkit.org/attachment.cgi?id=385732&action=review

minimized testcase

Thanks to Alexander Polyankin, here's a minimized testcase, which involves video instead of canvas. This should help you diagnose the issue I hope.

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