Not scrolling on reformatted page as reads pdf

What I mean by this is if you look at the page where it is highlighting as it goes down. When it goes to the second page, it doesn’t go to the top of the page where the highlighting is, and when it scrolls down the page, the highlighted part goes out of view down the page. It used to always have the highlighted portion where you could see it as it was being read. Now it does not Scroll the page anymore as the highlighting moves.

I am reading a pdf file. It might work differently with other formats.