[Webkit-unassigned] [Bug 202985] New: Invalid pictureInPictureEnabled API result on Safari iOS13

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=202985

            Bug ID: 202985
           Summary: Invalid pictureInPictureEnabled API result on Safari
                    iOS13
           Product: WebKit
           Version: Safari 13
          Hardware: Unspecified
                OS: iOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: oren.me at gmail.com

Safari on iOS13 returns document.pictureInPictureEnabled as true, while it didn't on iOS12.
This breaks previous implementations where standard detection on Chrome uses document.pictureInPictureEnabled to detect support and iOS uses typeof video.webkitSupportsPresentationMode === 'function' && video.webkitSupportsPresentationMode('picture-in-picture')

now we need to do also user agent detection to exclude the document.pictureInPictureEnabled from iOS.
Is this change related to the work done for https://bugs.webkit.org/show_bug.cgi?id=201024?

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