[Webkit-unassigned] [Bug 182918] New: Issue with Service Worker on trivago.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=182918

            Bug ID: 182918
           Summary: Issue with Service Worker on trivago.com
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Service Workers
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kenjibaheux at chromium.org

Created attachment 334135

  --> https://bugs.webkit.org/attachment.cgi?id=334135&action=review

Screenshot showing the XHR failure

Filing on behalf of Jeffrey Posnick:

Setup:
 Technology Preview 49
 https://www.trivago.com
 Uses a custom bundle of Workbox [1]

Issues observed:
 - At one point, I received a "This page was automatically reloaded due to an error" (or message along those lines). I couldn't capture any logs or screenshot.
 - When visiting a search page [2] and reloading a few times, I was able to get into a situation in which an XHR request failed due "access control checks". The strange thing is that a) I don't belive the SW intercepts that traffic and b) it's a same-origin request. [ATTACHMENT]
 - The offline-game functionality works as expected.

The failed XHR is strange, though, and I was able to trigger a mysterious forced-reload.


[1]: Original Workbox at https://developers.google.com/web/tools/workbox/
[2]: https://www.trivago.com/?aDateRange%5Barr%5D=2018-02-27&aDateRange%5Bdep%5D=2018-02-28&aPriceRange%5Bfrom%5D=0&aPriceRange%5Bto%5D=0&iPathId=35013&aGeoCode%5Blat%5D=32.776199&aGeoCode%5Blng%5D=-96.799103&iGeoDistanceItem=0&aCategoryRange=0%2C1%2C2%2C3%2C4%2C5&aOverallLiking=1%2C2%2C3%2C4%2C5&sOrderBy=relevance%20desc&bTopDealsOnly=false&iRoomType=7&cpt=3501303&iIncludeAll=0&iViewType=0&bIsSeoPage=false&bIsSitemap=false&

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