I use Nextcloud 17 on a shared server.
I have no problem synchronizing with the desktop on my normal OpenSuse OS.
But I also use a debian as a virtual machine. And on this virtual machine, I also use the Nextcloud desktop application.
The new files synchronize correctly, but repeatedly, I have conflicts with files with the sqlite extension.
I did not note any other malfunctions except the message “There are unresolved conflicts. Click for more details”. Which leads me to signaling the sqlite file.