RESOLVED FIXED313142
`transition-property` should preserve <custom-ident> specified spelling/case for serialization 
https://bugs.webkit.org/show_bug.cgi?id=313142
Summary `transition-property` should preserve <custom-ident> specified spelling/case ...
Sam Weinig
Reported 2026-04-23 09:51:47 PDT
`transition-property: WIDTH` currently incorrectly serializes as `transition-property: width`, due to canonicalization of `WIDTH` to `width` at parse time. The spec says it should be parsed as a <custom-ident> and therefore needs to preserve the specified spelling/case.
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Sam Weinig
Comment 1 2026-04-23 09:55:30 PDT
Pull request: https://github.com/WebKit/WebKit/pull/63436
EWS
Comment 2 2026-04-23 17:00:02 PDT
Committed 311909@main (17adb886f41c): <https://commits.webkit.org/311909@main> Reviewed commits have been landed. Closing PR #63436 and removing active labels.
Radar WebKit Bug Importer
Comment 3 2026-04-23 17:01:13 PDT
<rdar://problem/175467206>
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