When the table rows not fit into one page and the table runs across multiple pages to show all the rows in data source in PDF Preview.
But when previewed as HTML only some amount of rows getting displayed.
To explain the problem created sample form with table bound to employee details with 149 records.
To render the XDP as HTML, the server options configured as give below.
And used the below URL for HTML preview of XDP file.
All the 149 rows are displayed spanning across multiple pages