Android Question Palmohtmltopdf update - PDF with different margins

I have an app on multiple devices.
For a few days now, and without having updated my application, the part that generates PDF from html, which uses palmohtmltopdf, generates different PDFs.
Now, these PDFs have no margins.

This has only started to happen on some devices.
I understand that perhaps an ANDROID update has modified that library.
It can be that? or what is escaping me.
I doubt users have installed any new apps or updated any others, but.
Can these libraries be shared by several applications?

I'll try to find out the library version, but there is something I don't understand well.
Thank you.