We can reproduce the reported pagination differences when converting the given Word document into PDF. On further analyzing the input Word document, the pagination differences was caused due to the words split to next line in the justified aligned paragraph.
Microsoft Word maintains two different line engines for layout and render the justified paragraphs by adjusting its lines inter word spacing. One engine is used in Word 2010 and below versions, another one is used in Word 2013 and higher version.
Both engines using separate algorithm for calculating inter word spacing to align the justified text. Currently, Word 2013 justification algorithm in DocIO is not 100% equal to Microsoft Word. That means our word splitting algorithm slightly mismatched with Microsoft Word 2013, word splitting algorithm. So, the last word of some lines may move to the next line.
This is the reason for the words split to next line while converting given Word document as PDF using DocIO. We don’t have any immediate plans to implement this feature. At the planning stage for every release cycle, we review all open features. We will let you know when this feature is implemented.