[Webkit-unassigned] [Bug 34337] New: Modal dialog resources fail to load if main page was trying to load the same

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=34337

           Summary: Modal dialog resources fail to load if main page was
                    trying to load the same
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org
                CC: beidson at apple.com, fishd at chromium.org


Created an attachment (id=47725)
 --> (https://bugs.webkit.org/attachment.cgi?id=47725)
test case

If a modal page uses a stylesheet, and immediately opens a modal dialog that
uses the same stylesheet, then the modal dialog remains unstyled. Ditto for
other resources.

This happens because we defer network events for all resources that are loading
at the time a modal dialog is displayed. So when the modal dialog asks for
resource, it just gets a reference to existing stalled one. Of all possible
ways to fix this, I think that we should reconsider the idea of deferring
loads, particularly for modal dialogs and alerts.

I do not know if the problem ever occurs on the Web (although it definitely
happens that a page beneath an alert remains blank or incomplete until the
alert is dismissed). But this did affect a Mac application that was using
WebKit for its UI.

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