When referring to a text repeatedly, it is really helpful if particular sentences appear in the same location on the page every time.
The current issue is that if you scroll forward and then back, the sentence will appear in a different location on the page.
It should stay fixed based on however you navigated to the text. E.g. navigating to chapter 2 which will appear at the beginning of the page with every other page before or after relative to that.
It would make working with a text much more efficient, rather than getting lost everything you scroll.
Obviously this is only the case for "paged view" not continuous scrolling