Comment 8 for bug 1290697

Changing 'rgb' to 'rgba' in xsettings fixed the issue in Gedit for me. However, setting to rgba makes other apps render text poorly. After screwing around for hours I did something that fixed that thought, but I'm not 100% sure what it was. I think it was a fontconfig file buried somewhere in my home dir. I removed all instances of fontconfig in my home folder. Lastly, I setup a fonts.conf file to clean up any text that still looked a bit off.

With that said, here's a list of steps to try and resolve it
1. Remove (backup first) all instances of fontconfigs in your home directory (I think there was one in ~/.local/share/ & ~/.config/)
2. Change "rgb" to "rgba" via dconf-editor > org.gnome.settings-daemon.plugins.xsettings > rgba-order
3. Download fonts.conf attachment and place in ~/.config/fontconfig/
4. Reboot