I've done some testing:
- reboot does a full Opus exit and it didn't help
- no_external_change_notify is set to false
- it happens on local drives (haven't checked network ones yet)
- happens to both NTFS junctions and normal folders (and files)
- no filtering is applied
As for the antivirus, Kaspersky was removed and reinstalled recently. But I had Kaspersky prior and it didn't cause such problems
It doesn't affect Windows Explorer, the changes are refreshed there instantly when they are made in Windows Explorer. However, the changes made in Windows Explorer are reflected in Directory Opus in the same weird form as if the changes were made in DO (folder changes only shown after a manual refresh, file duplicates with new and old names, vanishing after manual refresh).
If the changes are made in Directory Opus, it behaves is even weirder, even the folders are duplicated in Windows Explorer, albeit temporarily (they disappear after a refresh).
Edit: also, Kaspersky is not activated yet, its protection components are reported as not running.
New video here.