I've been struggling to find a solution for the last 30m. I tried the following
- Install gnome-settings-daemon
- Install xdg-desktop-portal-gnome
I already have the kde and gtk portals installed (it comes by default). I am using OpenSuse Tumbleweed. Those apps are running under flatpak
EDIT: It was a bug in XDG Portals and it was fixed
@Fredol I've found that many times, just disabling hinting unnastifies fonts.