[Webkit-unassigned] [Bug 151234] New: visibilitychange:hidden doesn't fire during page navigations

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151234

            Bug ID: 151234
           Summary: visibilitychange:hidden doesn't fire during page
                    navigations
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Events
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ojan at chromium.org
                CC: rniwa at webkit.org

visibility state should transition to hidden whenever a page might go away. Unlike unload/pagehide, we can fire these reliably. See https://github.com/w3c/page-visibility/issues/18 for more details, particularly, igrigorik's table near the top that shows where browser's don't fire this. The Firefox behavior of having green for all of the visibility-change-->hidden column is the one that matches the spec and makes for the best developer platform.

Ryosuke, are you the right person on WebKit to talk to about this?

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