Invisible section

In my notebook, there is a boundary in which if I drag or type anything beyond that boundary, it is invisible. This has only occurred with a file I am inserting as a printout. Inserting it as a print out multiple times, it always cuts off at page 656. I don't believe it is an issue with the file because when I had someone else put it in their one-note, they are able to see all the pages. In the first image, I show the boundary. In the second, I show how anything dragged below that boundary is invisible.