Save as Excel vs PDF

I noticed when I save a larger document the number of pages in the PDF is smaller than the number of printed pages of Excel. Is there a way I can save the PDF exactly as the Excel is represented?

For example I saved a 15 page Excel Document but the same document saved in PDF format only has 13 pages.

(ms is a memory stream)
I’m currently using this save method: Workbook.Save(ms, SaveFormat.Pdf);

@tkurian,
Would you like to provide your sample file and executable Console project? We will check it soon.