Fear not we have a solution it is based on a post I found here by a user named Devid many thanks Devid. Click Preferences Cut and Copy Preferences. I hope it helps.
I hope it helps.
In Word 2016 Windows Office 365 users only you can see some extras on the Equation Editor ribbon especially the LaTeX. LaTeX equation editing supports most of the common LaTeX mathematical keywords. Simply upload your document and the application will do the rest. To create a 3x3 matrix equation in the LaTeX format type the following into a math zone.