[sciurius]

Yes, it is causing issues to me, but not to the extent that I want to rush you into solutions that may turn out to be less optimal than expected.
A good solution may require some thinking. Scrolling by page size is an unfortunate choice, scrolling by screen size is what matters. In portrait mode, MSPro will always display a page so the difference does not matter. In landscape mode the situation is different.

A partial solution (which may as well be called a bug fix) is to change the "Scroll Up or Turn Page if at Top" to obey the half-page turn position? I assume that when you want to scoll to a certain point when you tap the screen, you'll also want to scroll to that point when you push the pedal.
This will solve it for some cases already.

A full solution may involve switching to screen % scrolling, and using different actions depending on what portion of the page is on the screen.