Setting fit width and height into one page doesn't print gridline and headings

Steps to Reproduce

1. load attached excel file
2. export it as PDF with the page setup below:

   	PdfExporter pdfExporter = new PdfExporter();
   	
   		pdfExporter.getPrintSetup().setFitHeight(1);
   		pdfExporter.getPrintSetup().setFitWidth(1);
   		pdfExporter.getPrintSetup().setPrintGridlines(true);
   		pdfExporter.getPrintSetup().setPrintHeadings(true);
   //export a book
   

Actual Result

The exported PDF file doesn't have gridline and heading printed.

Expected Result

The exported PDF file should have gridline and heading printed.

Debug Information

The issue happens when the cells with data locate at different pages (out of one page). If they are on the same page, there is no issue.