233430 2021-11-22 11:26:48 -0800 Implement new apperance property behavior 2021-11-29 11:27:54 -0800 1 1 1 Unclassified WebKit CSS WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 jarhar webkit-unassigned webkit-bug-importer zcorpan oldest_to_newest 1817325 0 jarhar 2021-11-22 11:26:48 -0800 The behavior of the appearance property is being changed, as shown by the following spec/WPT links: https://github.com/whatwg/html/pull/7004 https://github.com/w3c/csswg-drafts/pull/6537 https://github.com/web-platform-tests/wpt/pull/30267 https://wpt.fyi/results/css/css-ui?label=pr_head&max-count=1&pr=30267 1817458 1 zcorpan 2021-11-23 06:54:09 -0800 The biggest change as compared to how WebKit currently behaves (and as Chromium and Gecko behaved a few years ago) is that not every element can have any appearance. A <div> can only have the "none" appearance. A checkbox can either be "none" or "checkbox" kind of widget (the latter is equivalent to the 'auto' keyword). And the spec now defines how various author properties like 'background-color' cause the kind of widget to switch to "none", which wasn't interoperable. 1818340 2 webkit-bug-importer 2021-11-29 11:27:54 -0800 <rdar://problem/85826878>