I just simply renamed a directory in the OpenCloud web interface ("Native Instruments" to "NI"), but the desktop client does not replicate this on my local filesystem! It stays on its old name "Native Instruments", but much worse is the fact that after this change, the desktop client looses its connection to my OpenCloud itself, and can't reconnect! I closed the desktop client and reopened it, it does not help. Rebooting my Mac Mini M4 Pro (Sequoia 15.7.3, 64GB RAM 1TB SSD, 4TB SSD external) also doesn't make a difference. After restart of the OpenCloud server itself, the client can connect again, but only after a reauthorisation. So far, so good, but it still doesn't sync the renaming of the "Native Instrumens" folder to "NI"! The desktop client says: "Abgebrochen: Fehler beim Umbenennen, unbehandelter Statuscode: 400" in my "Persönlich" space. This message also exists 4 times at the "Aktivitäten" log. I also renamed an additionals Space from "Studio" to "AFM", the desktop client also doesn't sync this. So the data on the OpenCloud server and the local data isn't consistent at all anymore.
So the desktop client seems, beside the fact of the missing virtual filesystem functionality, seems to be useless on MacOS at this time and for me OpenCloud also, if it is not able to sync simple filesystem operations like renaming directories/files.