This is a known issue. Even Save as PDF (as opposed to printing to PDF) produces the same problem:
For More Information see: FM12 Save as pdf Issue
This is one of many acknowledged bugs that can be found in the Known Bug List thread here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: https://www.dropbox.com/s/jt09b82i0xijbu3/FMP%20Bugs.zip