I have found the new engine for creating reports pretty simple to walk around. The only thing that is troubling me is trying to create a custom landscape style report. I have tried applying the USLetterLandscape.rdlx-theme, as well as changing the paper orientation to Landscape. I have even gone so far as trying to force the paper size to change, but to no luck have I seen a difference both in the designer but also when I preview/run the reports.
Does anyone know how to make custom landscape reports?