PDF issue on multi page report: only last page is correctly rendered

Hi,

I have a strange behavior: when creating a multi page report, every page before the last one appears to be 80% smaller than expected, and only the last report page looks correct.

In a n page report, from page 1 to page n-1, i have this:



And page n looks like this (expected content size):



I am using Eclipse Birt, Birt version 2.2.1.1 to create the reports.
I embedded the birt engine inside a JSF application deployed on a JBOSS server 4.3.0.GA

I created a report without defining anything in the master page, everything is correct.
Using any element in the master page and the rendering give me this pretty strange result.

The content, even somehow miniaturized is correct: layout ok, data ok, no problem.
But it's generated smaller on all but last page...

And of course, when generating a "one page" report, I do not have any trouble.

Please tell me it is something trivial I can easily fix...