The repeat section settings in the dynamic PDF lets you determine how to display multiple records with a section in terms of page breaks. You can, for example, decide to place the first page break after 1 sections and after that every 3 sections.
But it seems that if you had 3 records in the last page it would still add another page break after it and a an empty page would be added after it.
In order to make sure this didn’t happen we added a new property to our repeat settings. Turning on this option would make sure that when the last records are 3 - a new page will not open after it.
* Thank you Yossi W. from System wise! 
Enjoy!