Viewer does not display some frames

  • Hi,
    I was testing data combination in a new official tax form pdf document and I have realized that in one of the pages, two frames (boxes) are not displayed. These boxes are just two drawings with no data field or whatever assigned.
    With our other testing pdf viewers they display correctly.

    Could you please give it a look?

    You can download the pdf from
    http://www.bigun.com/bigun/Varios/001_pdf_11.pdf

    (It's only the page that displays incorrectly, page nr. 11)

    By the way, I've checked it with the last version, 3.5.7.
    Thank you very much for your support.

    Edorta.