Spool to PDF - First page blank w/ run in background

I have a report that I write to spool using NEW PAGE PRINT ON/OFF. I use the FM 'CONVERT_ABAPSPOOLJOB_2_PDF' to convert it to PDF. Everything works fine in the foreground. The problem is when a background job is scheduled, and the file written to the app server, a blank page is inserted at the beginning of the PDF file. No data is lost, just a blank page inserted.

Has anyone seen this before? If so, what was the fix?

Thanks in advance