Docmerge footer

I have a problem with the docmerge footer used to create offers from the Quotes module.
My problem is simple: when I'm creating a quote with a number of product lines greater than 2 or 3, in the moment in which I'm printing the docmerge pdf, this pdf appears with an overlapping problem.
The product lines used to overlap the footer of the page, instead of breaking itself into a new part that should go at the beginning of a new page.

My question is: is it a problem dealing with docmerge or is it caused by something in Word?

PS: I know how to use Word so I'm thinking it's about some issues with docmerge.. In fact this seems not to appear with the header of the same doc, don't know why..