A family of Microsoft word processing software products for creating web, email, and print documents.
I am also having the same problems, going on 6 months now.
IPad Pro 10.5
iOS 11.3
Word & Excel latest version as at this date.
It doesn’t appear Microsoft are monitoring this thread, however I may have an insight as to a potential cause of the issue. When the document/spreadhseet is saved, there is a chance Microsoft has a setting that makes dropbox think that the file is now open in two locations and the file being edited after the initial save is a Read-Only copy.
I say this because I discarded previous changes after the auto upload of a document wouldn’t complete. I then opened it again and was given this message.
Even though I am the only person with the file open it is giving me this error. Maybe this is what is causing the error with the auto-save?
If this is the case there should be quite a simple fix for the issue.