While working on Google Doc files that I created within Dropbox, I am unable to successfully utilize the "add comments" feature. I am able to insert a comment and type information into the comment box, however when I click the "save" button, I receive the following error message:

After clicking the "Reload" button, the page refreshes and the comment is no longer available/did not save properly.
Editing within the document is working normally.
My internet connection is stable and strong; this happens with multiple documents. Seems like an issue with the integration between Dropbox and Google. Anyone know what is going on and how to fix it?