I've created a postcard sized document. The top and bottom of the page are pixel layers with fill layers added for gradient and pattern effects. The document views correctly when editing or exporting as an image file (jpeg, png) but when exported as a PDF for printing then the fill layers are incorrect. The fill layers are not filling the object and are cropped inside the pixel layer.
See attached for the document and also the rendered jpg and pdf.
Invite.afpub
Invite1.pdf