The font for the emoji is "Noto Color Emoji". The font for the symbol is "Segoe UI Symbol", which comes from a folder containing fonts from Windows. This is Arch Linux, with fontconfig 2.16.1. Fontconfig defines "system-ui" like this: https://gitlab.freedesktop.org/fontconfig/fontconfig/-/blob/main/conf.d/45-latin.conf?ref_type=heads#L281-307 I guess this explains where the symbol comes from, and the use of `"system-ui"` is a bug of the website?
Bug 1958134 Comment 3 Edit History
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The font for the emoji is "Noto Color Emoji". The font for the symbol is "Segoe UI Symbol", which comes from a folder containing fonts from Windows. This is Arch Linux, with fontconfig 2.16.1. Fontconfig defines "system-ui" like this: https://gitlab.freedesktop.org/fontconfig/fontconfig/-/blob/main/conf.d/60-latin.conf?ref_type=heads#L74-87 I guess this explains where the symbol comes from, and the use of `"system-ui"` is a bug of the website?