Comment 37 for bug 1858636

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Sebastien Bacher (seb128) wrote : Re: snapd generates incomplete fontconfig caches, result in emoji rendering issue in chromium

Confirmed by doing those steps on a focal system

($ sudo apt install fonts-noto-color-emoji
if you don't have it installed)

$ fc-cat /var/cache/fontconfig/* | grep NotoColorE
there is a result listed

"NotoColorEmoji.ttf" 0 "Noto Color Emoji:familylang=en:style=Regular:stylelang=en:fullname=Noto Color ...

$ sudo rm -rf /var/cache/fontconfig/
$ sudo snap refresh --edge core
(there is probably a smarter way to trigger a fontconfig cache refresh from snapd but that did it)

$ fc-cat /var/cache/fontconfig/* | grep NotoColorE
-> not NotoColorEmoji.ttf result anymore