262030 2023-09-25 00:20:29 -0700 Link-stylesheet elements fire load events for non-2XX responses (e.g., 3XX responses that do not redirect) 2024-03-06 16:59:42 -0800 1 1 1 Unclassified WebKit DOM WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://github.com/web-platform-tests/wpt/pull/42288 BrowserCompat, InRadar P2 Normal --- 262927 1 jannis.rautenstrauch mike karlcow mike twisniewski webkit-bug-importer oldest_to_newest 1979740 0 jannis.rautenstrauch 2023-09-25 00:20:29 -0700 Link-stylesheet elements fire load events for 3XX responses that do not redirect (e.g., no location header). - 300, text/css, image body: https://observer.sectec.rocks/opg/link-stylesheet/?url=https://echo.sectec.rocks/echo/?content-type=text/css&ecohd_status=300&ecocnt_img=width=200,height=300,type=png - 302, text/css, css body: https://observer.sectec.rocks/opg/link-stylesheet/?url=https://echo.sectec.rocks/echo/?content-type=text/css&ecohd_status=302&ecocnt_css=p%20{color:%20red;} - 307, text/html, empty: https://observer.sectec.rocks/opg/link-stylesheet/?url=https://echo.sectec.rocks/echo/?content-type=text/html&echd_status=307 Refer: https://bugs.webkit.org/show_bug.cgi?id=261811 1980227 1 mike 2023-09-26 11:05:20 -0700 I suspect the same behavior would be observed in WebKit for any other type of subresource request; that is, the behavior isn’t special or specific to <link rel=stylesheet> elements — instead, the load event will also fire for any other type of subresource request with a 3XX response that doesn’t redirect. And in that case, https://fetch.spec.whatwg.org/ would be the place where the relevant requirements are given. At least there’s nothing in the HTML spec that states any requirements about what UAs must do in the case where the response for a <link rel=stylesheet> request is a 3XX response that doesn’t redirect. (In contrast to the https://bugs.webkit.org/show_bug.cgi?id=261811 case, where the spec does explicitly state requirements for what UAs must do when the MIME type isn’t text/css.) 1981241 2 mike 2023-09-29 04:02:26 -0700 Pull request: https://github.com/WebKit/WebKit/pull/18404 1981703 3 webkit-bug-importer 2023-10-02 00:21:13 -0700 <rdar://problem/116331826> 1981781 4 mike 2023-10-02 10:16:15 -0700 Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/42288 1982078 5 ews-feeder 2023-10-03 08:19:03 -0700 Committed 268779@main (d84fa2dfd249): <https://commits.webkit.org/268779@main> Reviewed commits have been landed. Closing PR #18404 and removing active labels. 2019099 6 twisniewski 2024-03-06 10:27:26 -0800 It looks like the WPT pull request was never merged. Could you please check if it's still good to merge and do so? It would be nice to have this test up on wpt.live and wpt.fyi. 2019232 7 karlcow 2024-03-06 16:59:42 -0800 hmm, thanks again Thomas.