When I am using split screen, I have experienced that one of them "freezes." I cannot do anything on that side. In my case, I am in low light mode. The letters appear gray-ish and I cannot turn pages, or anything. what I can do is use the other side and click on a verse/jump to reference and the "frozen side changes to that, but it still is "frozen." closing and reopening doesn't do it. or at least not in a shorter period. I have shut my ipad down and restarted, and things work. While I didn't pay attention to exactly what I was doing when it froze, I think that behavior happened after a couple of differing operational moves, ie, i was not doing the same thing.