Print Designer - is it possible to add page breaks?

In the new Print-Designer (not the “Print format”) when I design a new print-format for an sales invoice, there is an option to add a new page. You can then design and align different items on the page. However when printing the sales invoice with the new design, every element on the page is put on the first page or there is a page break, but not where it was put in the print-designer ( wkhtmltopdf installed with qt)

Is seems that several people are having this issue. Therefore the question, if the page-break functionality is working in print-designer or it is not yet completely implemented.

thanks for any hint or reply.