[Webkit-unassigned] [Bug 229762] New: Some overlapping navigation/traversal cases cause the outer frame to get reloaded

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Sep 1 10:00:34 PDT 2021


            Bug ID: 229762
           Summary: Some overlapping navigation/traversal cases cause the
                    outer frame to get reloaded
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: d at domenic.me

In https://github.com/whatwg/html/issues/6927 we are investigating the general non-interoperable area of overlapping navigations and traversals, e.g. history.back(); history.back() or location.href = "#1"; location.href = "?2", or mixes thereof.

This is a big mess in general and the spec isn't helpful. However, some cross-browser testing revealed a couple of interesting cases where WebKit seems to definitely be doing the wrong thing:

- https://wpt.fyi/results/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/tentative/cross-document-traversal-same-document-traversal.html?label=master&label=experimental&aligned&q=overlapping-navigations
- https://wpt.fyi/results/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/tentative/same-document-nav-cross-document-traversal.html?label=master&label=experimental&aligned&q=overlapping-navigations

or in wpt.live form

- http://wpt.live/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/tentative/cross-document-traversal-same-document-traversal.html
- http://wpt.live/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/tentative/same-document-nav-cross-document-traversal.html

For these two tests, WebKit somehow manages to reload the *outer* page. But nothing in the test should be able to cause this; all traversals and navigations should be taking place in the inner frame.

It might be worth investigating these cases, ahead of investigating the general interop problem around overlapping navigations/traversals.

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