My proofreading and editing services company has a custom Word add-in to help us use consistent comments for our customers. The comments were styled nicely and included a hyperlink for more information. This update has blown that tool up. Many of our freelance editors started reporting that our tool no longer posted comments (instead, only posting empty comments) and reported the comments started appearing different; I now see what they mean. Word's comment API only pastes plain text, which completely ruins our comment library. Thanks, Microsoft, for trying to be like Google Docs while completely changing the entire comment methodology... Not everyone needs to chat via a Word doc. Sometimes, comments are just comments to help the author improve their writing.