The following is a small sample of the words MS Word marks as a grammatical error:
don't, I've, I'd, doesn't, I'm
These are all contractions.
However it doesn’t mark anything as a grammatical error if I write these out:
do not, I have, I would, does not, I am
I’m using Microsoft Word 2016 and in previous versions it never did this. Is there a feature I need to turn on or are they at Microsoft starting to turn into grammar police? As far as I know contractions are still considered proper English.