Text shrinks after several replies in email

In iOS4 and 5 many users noticed the text would shrink down to 1 point text making it very hard to read after several replies to an email message using the native iOS email app. Users would have to scroll to the right or blow up the screen to read the entire message. Since upgrading to iOS6 the issue has not reared its head. I have not seen an article or tech note stating this has been corrected. Does anyone know if it has officially been addressed? Thanks