Contacts from CardDAV take days to sync
I'm using gnome-contacts on my Librem 5 with CardDAV on my personal server (software: radicale). When I change a contact with another CardDAV client, e.g. Cardbook in Thunderbird, it takes sometimes more then a day to show up in gnome-contacts on my L5.
In this time span I rebooted my L5 multiple times, started gnome-contacts and searched for the changed contact. But the change of the contact didn't show up.