The pull request mentions https://github.com/web-platform-tests/wpt/issues/44771 , and https://bugzilla.mozilla.org/show_bug.cgi?id=1881943 is already filed on our rendering failure there.
Bug 1883864 Comment 1 Edit History
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The pull request mentions https://github.com/web-platform-tests/wpt/issues/44771 , and bug 1881943 is already filed on our rendering failure there.