Notes Heading options no longer Editable in 2.0

When using the notes tool to edit an old map from before version 2.0, I can no longer change a line of notes to have a different heading, as I previously could. This then no longer allows me to begin a new section of text if I have used any of the other heading options. Whenever I try to change the headings, the cursor jumps to the top of the page and tries to edit my first line of text instead of the one I was editing.