I agree with the naysayers: these "new and improved" comments are a piece of sh_t.
Not only was I unable to spell-check them except in one file* (I was inserting comments and corrections into student papers) unless I did so manually, but, as I found out the hard way, a lot of them disappeared when I saved the file as a *.pdf -- why? When they're the default/ regular size (I guess), they're too small for me to read; when I enlarge them, as I had to in order to edit them manually, they must have gotten too big and been pushed off somewhere. As a result, I wasted time not only on editing these comments, but having to redo several files.
Another issue: for some reason, when I tried enlarging the comments, the margin or line separating them from the main text kept jumping, so I had no control over it. As well, sometimes, I'd want to edit a comment and open it to edit, and it would jump down half a screen or more.
'Which of you morons thought this would be a good idea?
*Even in this one file where I was able to spell-check them, I was limited to the words suggested; if I wanted to correct something manually, there seemed to be no way to.