A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Hi Tom,
Thanks for your update.
I would like to suggest you follow steps in this article to uninstall Office 2016 for Mac and reinstall it to check if the issue occurs.
If it persists, please record a video about how you encounter the issue, and we will further investigate it. To protect your privacy, I have sent you a private message for the information, you can access it via this link: https://answers.microsoft.com/en-us/privatemessages/list
Regards,
Yoga