Using the most recent iPad, downloaded L4 3 for it. VAST improvement over the early versions! Many many thanks!
I was reading the Anchor Bible Dictionary in rotated mode ( - instead of | ), columns set to automatic, and had two columns, which made sense. Then suddenly, after 30 minutes and multiple pages, it shifted into one large column, which was two big. I went in to the settings and changed it to two columns. No change. Three columns. No change. Closing the program entirely (not just changing to another one, but manually shutting Logos down) does reset it two two columns until it reverts back to one. It's a bit quirky and unreliable.