Similar problem, but on Win 8.1, newest Nc client, 3.3.0, but persisted on 3.2.1.
Nc v. 21.0.3
shared server Ubuntu.
What I need to do is to sync all .~lock.* files. Yes, to sync them.
So, in “Edit ignored files” I have ticked “Sync hidden files”. All the rest is by default.
Each sync folder has no files to be ignored. Just blank window.
What and where should I change the setting to have these files synced?