[Webkit-unassigned] [Bug 174626] New: webkitfullscreenchange event not fired on iOS 11 for vimeo.com videos

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=174626

            Bug ID: 174626
           Summary: webkitfullscreenchange event not fired on iOS 11 for
                    vimeo.com videos
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: graouts at apple.com
                CC: webkit-bug-importer at group.apple.com

Steps to reproduce:

1. go to https://vimeo.com/225249697
2. tap to start the video
3. inspect the page to find the <video> element
4. type the following in the Console: $0.addEventListener("webkitpresentationmodechanged", event => console.log(event.type))
5. type the following in the Console: $0.addEventListener("webkitfullscreenchange", event => console.log(event.type))
6. enter fullscreen
7. exit fullscreen

You'll notice that the "webkitpresentationmodechanged" event gets fired as the media enters and exits fullscreen, but "webkitfullscreenchange" isn't.

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