PDFs do not work with the Jazz Font
I created a Test Score and applied 2 separate fonts to it, Jazz and Bravura, then exported them as PDFs. The Bravura PDF came out fine (seemingly). The Jazz one didn't come out so fine and did not look correct. I can't really explain what's going on here, so it's best that I just attach the 2 PDFs on this along with the score so that you can see the difference.
(Note: If you notice that the title is a different font from the PDFs, then that just means you don't have the JazzText font installed on your computer. Don't worry about that, it's completely normal.)