"Scroll" does not work in classic view

I'm trying to read The Love Lesson's In Session and at the same time to test the platform to see if I can use it for my own business as well or not...
I stumbled upon a problem where in classic view all arrows lead to the next or previous page. Non of them functions as a scroll to see the lower part of the page. The interactive function works as expected and it's fine, but I didn't id much more appropriate for mobile than desktop view where I expect to have a smooth classic reading.
I don't have a mouse, the only tablet where pen button I usually use instead of scroll also functions as "move to next page" button. This means I have to use browser slider to move to the lower side of the page which is particularly annoying.

I am using several addons. One is NoScript (google analytics is blocked, the rest not) in combination with Adblock Plus and Ghoster. I imagine others should not cause a problem, but I also believe the site should function fairly properly even with the addons listed.