Created attachment 136621 [details] Screenshot of gucharmap with broken glyphs Before updating to libcairo2 1.15.8-3 color emojis from Noto Color Emoji font were ignored, black ones from Symbola were used instead. Now all of emojis present in Noto Color Emoji are broken: they are not displayed neither black nor in color. Distribution: Debian 10.
This happens only with disabled font hinting. When enable hinting, at least slight one, emojis become displayed. However, I don't see a reason for bitmaps to be dependent on hinting.
You may want to enable hinting specifically for emoji fonts. Here is my /etc/fonts/conf.d/68-color-emoji.conf <?xml version='1.0'?> <!DOCTYPE fontconfig SYSTEM 'fonts.dtd'> <fontconfig> <match target="font"> <test name="family" compare="contains"> <string>Emoji</string> </test> <edit name="hinting" mode="assign"> <bool>true</bool> </edit> <edit name="hintstyle" mode="assign"> <const>hintslight</const> </edit> <edit name="embeddedbitmap" mode="assign"> <bool>true</bool> </edit> </match> </fontconfig>
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