We have a bunch of WPT failures here: https://wpt.fyi/results/html/the-xhtml-syntax/parsing-xhtml-documents?label=master&label=experimental&aligned&q=math%20%20not%28path%3A%2Fjs%29&view=subtest That should be fixed by backporting https://chromium-review.googlesource.com/c/chromium/src/+/936983
Pull request: https://github.com/WebKit/WebKit/pull/6079
Committed 256391@main (154fb73e0c5b): <https://commits.webkit.org/256391@main> Reviewed commits have been landed. Closing PR #6079 and removing active labels.
<rdar://problem/102033089>