[Webkit-unassigned] [Bug 205792] New: If Safari is in macOS fullscreen mode and HTML Fullscreen API opens fullscreen, page does not respond to any input

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205792

            Bug ID: 205792
           Summary: If Safari is in macOS fullscreen mode and HTML
                    Fullscreen API opens fullscreen, page does not respond
                    to any input
           Product: WebKit
           Version: Safari 13
          Hardware: Macintosh
                OS: macOS 10.15
            Status: NEW
          Severity: Blocker
          Priority: P2
         Component: UI Events
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: enjikaka at gmail.com

If you are on a page that supports HTML5 fullscreen and go into fullscreen the web app works if Safari is in windowed mode, but if the user has pressed the green button on the top left in the macOS GUI to make the app fullscreened in the OS before enter HTML5 Fullscreen, then any user input in the web app stops working.

Isolated test case: https://cdpn.io/enjikaka/debug/jOEYGQW/gaAeYzgXbooA

This can be reproduced on TIDAL and YouTube. And probably anywhere else that uses HTML5 Fullscreen API too.

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