When printing (i.e. a Package) in Legal and Landscape mode or setting, it prints on the paper just like how it would print if the setting was left at Letter and Portrait mode. So few lines at the bottom of each page were cut-off and it did not utilize the many space available on the right side of the paper.
Also, when printing large package bodies (i.e. 21 or more pages long), the very last page printed a repeat or duplicate of the last 14 lines from the 2nd to the last page.
The 2nd to last page shows lines 1160 to 1192.
Then the very last page shows a repeat or reprint of lines 1174 to 1192.
These were evident in the Print Preview as well.
Copy and paste your code in another application (i.e. Word) and print it from there.
Waiting for fix in a future release of SQL Navigator for Oracle.