Hopefully you have not been one of those affected by the bug in a version of Microsoft Word but if you have been, there is some good news. Microsoft has now released a patch which customers have reported fully fixes the issue.

The Microsoft discussion of the whole incident is here.

The Microsoft discussion is here.

https://answers.microsoft.com/en-us/msoffice/forum/msoffice_word-mso_win10/microsoft-equation-editor-30-equations-and/fc3359c4-01c8-4638-acf8-32ce03b690ed

And the link to the fix is here.

https://support.microsoft.com/en-gb/help/3085439/april-12-2017-update-for-word-2016-kb3085439