Since the latest update the icons "recordings" and "documents" overlap each other in the portrait layout. I have attached a screen shot.
To get through a show I can modify the layout and turn off the "recording" icon so it doesn't cover the attached "document" icon.
I'm planning to submit a fix for this tomorrow.
Meanwhile, another workaround is to click the Layouts button in the bottom toolbar, select Edit Details, and set Open Full-Screen Document to Song Selection. Then you can click the song title instead of the document icon to open the document.