I agree with this post, in fact, today, I found the dictation function to input a phrase, delete it, and print the second half of the phrase! I have had to repeat phrases several times! It also stops working from time to time; doesn't punctuate at all, and as mentioned doesn't know how to capitalise! If this persists, perhaps you can offer solutions such as alternative dictation services; or how to advise Microsoft of these errors?
I switched to dictation because I found the Proofing function frequently landed on the wrong word, and this proved highly frustrating as I have eyesight issues. Why use a proffing function, and not just a spell checker?