https://bugzilla.redhat.com/show_bug.cgi?id=1924576
--- Comment #8 from Akira TAGOH tagoh@redhat.com --- GNOME (or gnome-tweaks) should have own default value for sub-pixel rendering. those config is written like respecting it. So if they change something after copying them into /etc/fonts/conf.d, that may means they have some problem to enable it. and I'm afraid I can't make it off hand because that may also means it will take effects on all the desktops for users. We need more observation for that change and need to change the default value on each desktop environments too if it is really best.