I am using DocGen version 14.4.0, Salesforce classic and have experienced the same issue in both FireFox and Chrome.

I have a complete Document Package that works perfectly.  However, the requestor has asked that I go back and add some additional text instructions to the form within the package.  When I edit the form and select the Add Note button the window appears for me to add my text, however, clicking OK or Cancel does nothing.  I have to refresh the page to get the box to go away.  

Any suggestions?

Thank you.