I'm exporting a document from InDesign CC 2015 with Interactive buttons. When printing the PDF on Lexmark printers, not HP printers, the PDF document is adding an element at top, thick bar, but this doesn't show up on the PDF itself. After using the different exporting techniques, determined, it's with exporting, not the printers. But I need to use the Interactive setting with buttons, and I can't get ride of this bar that's not on the document. Do I need to re-save the PDF, once exported to another document? Do I need to click on something during exporting process?