Sorry for the late reply. On Wednesday I checked it in the office and with Mobile Hotspot. iCloud is working and OneDrive not.
I also just checked Version 2.11.26, same behavior. iCloud works, OneDrive not.
I also rebooted the system in the meantime.
Are there any logs I can look for?
For myself, I think I will stuck with iCloud for now. But if it is helpfull I can do more tests with OneDrive.
I have no Dropbox or Google Drive available for testing.