I prefer this kind of experimentation on the city level. It's easy to find out what works and doesn't work, then adjust accordingly. I'm contrasting this to reform on the state/federal level which tends to be a lot more ham-fisted.
On android, my display jumped around about four times before the pop-up. And then I was done.
I wish responsive ui did not mean draw things as quickly as possible so that you can redraw them later as the user begins to interact. </rant> </sorry>
The same problem happened to me and I agree it was annoying.
The solution for reading the article is to read as much as possible before scrolling down. Then a slight scroll will move you down half the first page. After that first scroll the rest of the article behaves normally.