An error occurred while saving the commentAFA commented
I think I found a fix in Office 16. I found that it was happening only when I clicked in one particular comment bubble. I must have inadvertently clicked "Reviewing Pane" in the Track group when I was in this bubble. I like to toggle between All Markup and No Markup a fair amount, so it could have happened when I was doing this. Trouble was, when I opened up the doc again and clicked in that bubble, the Reviewing Pane popped open and was open then no matter which comment bubble I clicked in. What I finally did was to cut the text from the "offending" comment bubble, paste it into Notepad to remove formatting, delete the comment bubble it came from, and create a brand new comment bubble in its place, pasting the text into the new comment bubble. This appears to have worked.