This is odd, unless there's some feature or behaviour I've overlooked.
I was scrolling through Matthew 6-9 (NIV84) using my Wacom bamboo tablet (using Pan + Scroll mode assigned to button 1) and suddenly, the resource jumped into columns mode, and then back to normal mode when i continued scrolling.
Note it only happens when scrolling QUICKLY - when scrolling slowly, it doesn't seem to happen.
It doesn't always happen with the same passage.
Screencast here: http://www.youtube.com/watch?v=X-TgkifQa6g
It's 100% reproducible (Win 7 x64)
Thanks
Richard