looks like I found a bug in the print function of PDF Viewer (Build 41.5).
Take any PDF document, open it with Adobe Acrobat, add some text with the typewriter function of Acrobat, save the PDF file an open it with PDF Viewer. Everything is displayed fine including the additional text added with the typewriter function. If you now print the document the additional typewriter text is missing in the output.
I'll add an example. I simply printed "Test.pdf" to the PDF-Xchange 4.0 printer and saved the resulting PDF file to "Test_Printed.pdf". As you can see some text is missing in "Test_Printed.pdf".
Ralf