The document has been modified since the last save. - when saving anywhere

Started getting this message recently for any save of an existing document, even when I know that it isn't possible that the document has been changed. This is happening on Windows. I haven't checked on my MacBook yet. Save works, so more of an annoyance at this point. Seems to be the type of error that would be related to syncing cloud based storage.
Incidentally, it would be great if Adobe didn't seem to assume that users would prefer to store in their cloud service over a private cloud or local storage. Many companies (including mine) have policies against storing their data in a 3rd party network or cloud. There can be many reasons for this including customer requirements, i.e. defense contractors.
