In your video, Opus is renaming the folder, but Windows is then not telling Opus that the folder has been renamed (which Opus relies on in this situation).
The rename works, but the change notification does not come through.
From what you've said (but not shown in the video), the exact same problem affects Explorer as well: Opus renames the folder, and the rename succeeds, but Explorer does not get informed that the rename took place.
Whether or not creating a folder in Explorer triggers the same problem doesn't matter, although it is interesting and seeing what the two programs are doing using Process Monitor could provides a clue as to why one rename is not generating a notification and the other is; e.g. they may be renaming different file paths. Opus is successfully renaming a folder, and Windows is then not telling anything (neither Opus nor Explorer) that the rename took place.
That points to a low-level problem somewhere, blocking the change notifications from working for some successful renames.
Is there anything unusual about your desktop folder? e.g. Is it a junction pointing to the real folder on another drive, to save space on the system drive?
What happens if you use the folder tree to go to the actual C:\Users\Zack\Desktop folder (instead of the top-level Desktop virtual folder) and do the same thing there?
[quote="Nobmen"]problem by myself and other German user confirms.
no update in folder structure for different activities[/quote]
In exactly the same situation? "For different activities" suggests not. If not then let's not conflate the issue this thread is about with what is likely to be an unrelated issue (or issues). There are many reasons that change notifications can fail (in both Opus and Explorer, and any other program that monitors for changes). The FAQ on file change problems is the best place to go for similar errors, and if you have anything specific to report please use another thread and post details of exactly what is being done and how it fails, as well as the debug information that the FAQ mentions.