Turning off predictive text in Comments only

The last time I updated Microsoft Word it started utilizing predictive text while I was typing which was EXTREMELY annoying.  I managed to turn it off, but for some reason it continues to do this when I'm typing in a comment.  I've Googled ways to stop it from happening (i.e. disabling "modern comments," etc.) but nothing seems to work.  It's very distracting!  Any ideas?