I hope an HTML sample would help us to correctly understand the problem you faced with. Please publish it here or send it to support

The source HTML file is here
Element which causes page break is on the line 494 in the source HTML (or search for a comment “Empty TD leads to pdf page break”)
Rendered PDF with this element is here
Rendered PDF without this element (or
can be placed inside empty

) is here

The red dashed line shows where PD4ML inserts pd4ml-page-break-border-bottom
(defined in HTML head section)

Thanks, Oleksii