Inside lines of tables are not showing in pdf export

Hi,
Inside horizontal and vertical lines of table are not showing in pdf export.
Anybody have any ideas to correct this?

Not exactly what you asked, but I had similar layout / presentation issues with PDF Export, and I’ve been suggested to try the new client side PDF Export application, see Jira Macro: can the way the macro content is rendered in the PDF be changed?

Yes, I confirm that this should help you.

You can also customize the server-side PDF export, see https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Configuration/#HCustomizingthePDFexportLook26Feel