I probably do not understand picture scaling in print dialog, layout section - single custom. I expect that unit are in cm:
1) maintain aspect ratio checked, autorotate unchecked. When I set width, height is not adjusted, and if I set width manually to page width, image is not full page width (preview).

2) maintain aspect ratio unchecked, autorotate unchecked. Width and height manually set to page dimensions, but image is not full page size (preview). Swapping width and height does not do nothing.


Can anybody explain this behavior?
Thank you.