[Zubersoft]

Short answer - it's fairly complicated because the code for handling page turns is implemented separately for each display mode, because they all have different behaviors, settings, etc. So what's happening is the single page display mode doesn't know that the previous song is going to want to use the two page display mode, and it doesn't know the page turn mode used for the two page display mode, and it doesn't know that it should turn back two pages instead of one page. It just turns back one page at a time as that is what that display mode is designed to do. So while in theory I can handle what you are asking for, it does require that I inject quite a bit of code into the other display modes so that they can check to see if the previous song uses a different display mode, if that display mode is the two page display mode, if the two page turn mode is set to two pages, and the previous file has more than one page. It's really quite messy. So I'll have to think about what I want to do, as the current behavior is not actually incorrect - it just doesn't match what you are wanting.

There is a way you can handle this yourself though - go to Settings->Touch & Pedal Settings->Touch Actions, and set the top left corner to either "Go to previous song", or "Turn back 2 pages". Then you can use that corner when needed to handle this scenario, ensuring that it turns back to show both pages. I would recommend the latter setting in this case as it would correctly handle files with more than two pages, although it may create issues with page turns if the file has an odd number of pages (as then the last page should be shown by itself).

Mike