Every time I try to view a page and scroll down, the page automatically scrolls back up. Very annoying.
Using Opera 13.
I have no scrolling problems in Opera for Windows on the AVA website, but I use the current Opera version 44.0.
(It's odd that you're using v13 as supposedly version identifier 13 was skipped, thought to be for superstitious reasons much like the omission of 13th floor in some buildings.)