RESOLVED FIXED290625
MathML unknown elements are not rendered 
https://bugs.webkit.org/show_bug.cgi?id=290625
Summary MathML unknown elements are not rendered
Simon Pieters (:zcorpan)
Reported 2025-03-28 07:32:06 PDT
Demo: https://software.hixie.ch/utilities/js/live-dom-viewer/saved/13597 <math><a href=#><mi>x</mi></a></math> `a` is an unknown MathML element (currently), and is not rendered in WebKit. The spec says unknown elements should be treated as `mrow`. > Unknown MathML elements behave the same as the mrow element. https://w3c.github.io/mathml-core/#ref-for-dfn-unknown-mathml-element-2 In https://github.com/w3c/mathml-core/issues/142 there's a proposal to make `a` the MathML "link" element.
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Radar WebKit Bug Importer
Comment 1 2025-04-04 07:33:13 PDT
<rdar://problem/148593275>
Eri
Comment 3 2025-09-22 05:24:57 PDT
Pull request: https://github.com/WebKit/WebKit/pull/51113
Eri
Comment 4 2025-09-23 05:13:02 PDT
Pull request: https://github.com/WebKit/WebKit/pull/51189
EWS
Comment 5 2025-09-26 08:14:15 PDT
Committed 300580@main (752e87ed0dc7): <https://commits.webkit.org/300580@main> Reviewed commits have been landed. Closing PR #51189 and removing active labels.
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