To print a report, click the print icon in the report toolbar:

The viewer will load the print preview onto the screen.

To print double sided when printing horizontal documents such as patron lists or grades, choose Print on both sides - flip on long edge. This will flip the document on the long edge, as you've been used to.

When printing report cards, or similar documents where the orientation is portrait, choose Flip on short edge. This will make the card or report page logically:

Sometimes, print drivers will cause the rendered result to be dramatically zoomed in or out. To fix this issue, simply change a print setting, such as zoom or page selection, then revert it back to what you want. This will cause the document to re-render and fix the scaling.