MacOS Catalina, Duplicati version 184.108.40.206_beta_2020-01-18, Mono version 220.127.116.11
Destination is Dropbox
(“Ausflüge” is one of six Folders, two of the six are with Umlaut. With both I have the same problem. The others without Umlaut do not have this problem.)
When I ticked “Ausflüge” for backup the backup was successful.
But when I looked into the configuration again the tick has disappeared. As often as I ticked it again it disappeared every time.
In Restore “Ausflüge” is present and there seems to be nothing missing. No subfolders, no files where missing.
Also repeated backups (without tick) are successful.
The big problem now is, that I cannot de-tick “Ausflüge” for example in order to delete this folder, it is not possible. When I renamed “Ausflüge” to “Ausfluege” and ticked “Ausfluege” the backup immediately stopped with Error saying that “Ausflüge” is missing.