287114 2025-02-05 13:16:43 -0800 text-decoration does not work with ::highlight() 2026-06-02 00:50:52 -0700 1 1 1 Unclassified WebKit Layout and Rendering Safari 18 Mac (Apple Silicon) macOS 15 NEW https://bugs.webkit.org/show_bug.cgi?id=205228 InRadar P2 Normal --- 316075 1 hello webkit-unassigned bfulgham hello megan_gardner ntim simon.fraser webkit-bug-importer zalan oldest_to_newest 2092259 0 hello 2025-02-05 13:16:43 -0800 A custom `text-decoration` attribute inside of a `::highlight` selector does not work (for example the first example on MDN for CSS Custom Highlights: https://developer.mozilla.org/en-US/play?id=HAAIOUOYLTHEwSHpLBMb%2B9BfGhMmJlQ1o84DmT4hjDOw88l2N3nGGSeJTlo%2FdnKp%2FPDF6rodMZueNR4t). It works in Chromium. 2092658 1 ntim 2025-02-06 19:00:42 -0800 What custom `text-decoration` value are you trying? Seems to be working fine to me. If you're using `text-decoration: blue underline` then that doesn't work yet because of a different bug (though you can use `text-decoration-color: blue; text-decoration-line: underline`) 2092720 2 hello 2025-02-07 00:43:33 -0800 Ah sorry, I had reused the example from a Gecko bug I filed. The specific case I was trying was `text-decoration: underline wavy red;`. Specifying those separately as with individual properties does work as you mention. Please mark this as duplicate with the issue for the composite property then (I can’t find it). 2094248 3 webkit-bug-importer 2025-02-12 13:17:16 -0800 <rdar://problem/144725370>