Hello,
I have the same problem as mentioned in the german article Desktop Client unter Linux macht Probleme - on my side on Ubuntu 20.04. I can’t open the “main dialog”. I’ve been observing this for a few weeks (months?) and therefore even before I updated to the current Client version 3.4. My problem now is that with this I also lack the ability to configure a further Nextcloud server to sync with. The “Settings” works fine, a click on “Open main dialog” doesn’t show any reaction.
I tried via the start of the client with option “–logdebug” to get more info, but when clicking on “Open main dialog” no log entry appears.
Package version currently is “3.4.1-20211227.062515.fa32c1001-1.0~focal1”.
Are there more debug possibilities?