252925 2023-02-24 13:09:32 -0800 REGRESSION (STP 164): new failure in css/css-backgrounds/parsing/background-shorthand-serialization.html 2023-03-05 17:04:09 -0800 1 1 1 Unclassified WebKit CSS WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://github.com/w3c/csswg-drafts/issues/8496 https://bugs.webkit.org/show_bug.cgi?id=251838 InRadar P2 Normal --- 1 graouts darin darin webkit-bug-importer oldest_to_newest 1936622 0 graouts 2023-02-24 13:09:32 -0800 The last subtest of css/css-backgrounds/parsing/background-shorthand-serialization.html is failing in STP 164 when it used to pass in STP 163: https://wpt.fyi/results/css/css-backgrounds/parsing/background-shorthand-serialization.html?label=master&label=experimental&product=safari-163%20preview&product=safari-164%20preview&view=subtest We need to find out if this is a bug in WebKit or an issue with the test. We should also take the opportunity to import this test so this could be caught with EWS going forward. 1936630 1 darin 2023-02-24 13:32:34 -0800 The issue here is "transparent" vs. "none" for the default background which can be specified many ways, including "background: transparent" and "background: none". 1936633 2 darin 2023-02-24 13:36:17 -0800 Tim filed this https://github.com/w3c/csswg-drafts/issues/8496 1936924 3 darin 2023-02-26 19:53:59 -0800 We can just assume that we want this to serialize as "none" and fix it right away rather than waiting for the issues to be resolved. The fix is really easy: 1) Move "background-color" to the end of the list of longhands in CSSProperties.json for "background". 2) Rebase all the tests that change results. 1938613 4 webkit-bug-importer 2023-03-03 13:10:15 -0800 <rdar://problem/106208628> 1938968 5 darin 2023-03-05 14:06:42 -0800 Pull request: https://github.com/WebKit/WebKit/pull/11087 1938998 6 ews-feeder 2023-03-05 17:04:07 -0800 Committed 261250@main (bec59bdd1e26): <https://commits.webkit.org/261250@main> Reviewed commits have been landed. Closing PR #11087 and removing active labels.