Outlook 2011 – Commas are Changing To 1 in superscript

I just recently noticed that in Outlook 2011 that when I'm replying/forwarding certain emails that if I type a word that has a "comma", and the word SENDS,with the comma, that the sender then receives it with the comma changed with a subscript 1..

Example: I'm writing "See Cort's note below".. I hit send, it goes.. And then in my sent mail it says "See Cort¹s note below." and that's how they receive the email.

I've just recently noticed this and it doesn't happen every time.. Looks like when I'm forwarding emails, but again, it doesn't happen all the time..I just recently bought a new macbook that is now running Maverick, and since then I've noticed this happening.

Any comments on how to make this stop? It looks super unprofessional as I'm using this for work.