Hi Andrew,
Thanks for contacting support.
I have tested the scenario using new Document Object Model of Aspose.Pdf for .NET and I am unable to notice any problem. For your reference, I have attached the PDF document generated over my end. Can you please try using the new Document Object Model approach and in case you still face the same issue or you have any further query, please feel free to contact.
[C#]
//
instantiate Document instance<o:p></o:p>
Document document = new Document();
//
add page to pages collection of PDF file
document.Pages.Add();
//
creat an HTML fragment holding HTML contents
HtmlFragment fragment = new HtmlFragment(" |
|
");
//
add HtmlFragment to paragraphs collection of first page
document.Pages[1].Paragraphs.Add(fragment);
//
save PDF file
document.Save("c:/pdftest/TableFormattingIssue.pdf");