RESOLVED INVALID178262
webkitSupportsPresentationMode() return false where supported 
https://bugs.webkit.org/show_bug.cgi?id=178262
Summary webkitSupportsPresentationMode() return false where supported
Massimiliano Mura
Reported 2017-10-13 08:10:22 PDT
webkitSupportsPresentationMode('picture-in-picture') return FALSE where picture in picture should be supported Bug reproduced on: - macOS Sierra 10.12.26 -- Safari 10.1.2 - macOS High Sierra 10.13 -- Safari 11.0
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Alexey Proskuryakov
Comment 1 2017-10-13 09:33:57 PDT
Could you please provide a complete test case? This works for me. Specifically, I get "true" when I open https://www.apple.com/apple-events/september-2017/, and execute this code in Web Inspector console: document.getElementsByTagName("video")[0].webkitSupportsPresentationMode('picture-in-picture')
Massimiliano Mura
Comment 2 2017-10-16 03:24:56 PDT
There was an issue on our side, during the check the video was not loaded yet. Thank you, Massimiliano
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