BUG: 4.2 reading view / center click scrolling hard start then too fast

TCBlack

While playing around with the new reading view I noticed that it works great with the keyboard but scrolling with the center click scrolling not so much.  

As you can see in the picture below, I first have to move the mouse over two inches on the screen to get autoscroll to start and then it scrolls so fast that there's no way to read it.

Melissa Snyder

I found the same issue regarding where it starts scrolling in regular panel view as well as reading view, however, the scrolling speed seemed to me to be the same as in non-paged view. I've submitted a report to development to look into the behavior.