Hi folks!
I've been running into exactly the same issue as Johnny in the below thread:
https://www.dropboxforum.com/t5/Dropbox-files-folders/File-saving-problems-audio-and-word/td-p/421559
Was there any resolution to this? Adobe Audition is my #1 most used program - I record voiceover for a living and use Dropbox for sending files to clients - and the issue seems to have gotten worse lately, for whatever reason.