[Webkit-unassigned] [Bug 189885] New: Picture-in-Picture cannot be initiated when tab is not visible

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=189885

            Bug ID: 189885
           Summary: Picture-in-Picture cannot be initiated when tab is not
                    visible
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Macintosh
                OS: macOS 10.13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rob.stone at myself.com

When attempting to initiate picture-in-picture mode with `webkitSetPresentationMode("picture-in-picture")` while the tab is not visible, the following error occurs: `HTMLMediaElement::enterFullscreen(C4262CD8)   returning because document is hidden`.

While full screen mode should not be allowed to initiate when tab is not visible, picture-in-picture should not be subject to this same rule.

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