I have been using Nextcloud for a couple of years and have never seen this behavior, so I am looking for troubleshooting assistance.
I was seeing the same behavior on the 2.6.4 client, but currently I have one MacOS 10.15.5 machine running the 3.0 desktop client that is not syncing with the server. We have 285GB in a NextCloud 14.0.6 server that syncs properly to other clients. (Yes, I know it’s out of date, but that shouldn’t be causing what I am seeing.)
In the past when I had a problem with a sync client it was due to a conflict. I found the conflicting files, deleted/moved them, and it resolved on its own. This client is not ever generating a csync journal file. I have looked in the log and watched several MB of mundane messages whiz by. I have looked at the server logs and nothing jumps out at me. If I can’t figure out what the problem is, I guess I could back up the local copy on that machine (which has changes that aren’t synced to the server), resync from the server, and manually integrated the changes.
But I would prefer to figure out why it isn’t syncing. What should I be looking at?