Thanks for your feedback! We’re reviewing your suggestion.Robert Thorne commented
Microsoft, please fix this bug.
Mathtype's equation editor continues to be much better than your built-in equation editor for physics equations. A very large fraction of us academic physics types who generate documents using Word (instead of latex) use Mathtype, and we have large archives of course notes, powerpoints, etc. that are being screwed up by this bug.
Don't you think it would be a better use of our time to be training more engineers and programmers for you to hire, instead of reformatting all of our equations every time we need to update and print a document?