I like using the split-pane view in landscape mode. Used to be when I tapped the button in the upper left corner to access my library, it would slide out slightly, leaving both reading panes visible, and allow me to select which pane should receive the resource.
With this new version, when I click the upper left button, both panes disappear and my library list takes up the full window. If I make a choice, I'm not sure where the selected resource will go. If I click on the Read button and immediately hit the top left button again, it slides the two panes to the right, allowing me to select a pane, and then I can tap the library button to select the resource I want for the selected pane. Make sense?
Bill