See: https://github.com/whatwg/html/issues/8566 Blink is attempting to remove this quirk in the M110 release (stable in ~7th Feb 2023) behind a kill-switch. See: https://bugs.chromium.org/p/chromium/issues/detail?id=1394817 Implemented differently in each browser - but likely this piece of code in WebKit: https://github.com/WebKit/WebKit/blob/3401a13c6836f31a9590881bbff4333c10a2f0b5/Source/WebCore/rendering/TextDecorationPainter.cpp#L371
<rdar://problem/102920597>
https://wpt.fyi/results/html/rendering/non-replaced-elements/phrasing-content-0/font-element-text-decoration-color?label=master&label=experimental&aligned&q=font-element-text-decoration-color%2F
Committed 271338@main (0f4bbb289452): <https://commits.webkit.org/271338@main> Reviewed commits have been landed. Closing PR #21074 and removing active labels.