[Webkit-unassigned] [Bug 177847] New: data: stylesheets sometimes applied sync and sometimes async

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=177847

            Bug ID: 177847
           Summary: data: stylesheets sometimes applied sync and sometimes
                    async
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bzbarsky at mit.edu

Created attachment 322616

  --> https://bugs.webkit.org/attachment.cgi?id=322616&action=review

Testcase

Consider the attached testcase.  It should have green text per spec: the HTML spec uses fetch to get the resources referenced by <link> elements (see <https://html.spec.whatwg.org/multipage/semantics.html#obtaining-a-resource-from-a-link-element>) and fetch is always an async operation.

In Safari, the text is green the first time I load the testcase in a tab, but becomes red if I reload it.  That's broken.

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