Hi, I created a document (card with front, internal 2 pages and back side) and printed it on normal paper. It was possible with both side print without any problems, direction and output was as expected. When taking expensive thick paper I had to print both sides of the document separately - the printer was not able to turn the special paper. So I decided to print only one page and afterwards the other. When selecting in the printer dialogue only one page of the document (card = front / back side) the print was turned from vertical to horizontal. You can say, then put in the paper in the horizontal way, but then sizes did not fit anymore.
MacOS: Mojave 10.14.6
Publisher: 1.10.4