XCode Editor Bug? Insertion point and lines change

I've posted a video of this happening to YouTube, this was the easiest way to show what is actually happening. That video is at: http://www.youtube.com/watch?v=XwXbilxME1A

Around 6 seconds in I was just typing, no key commands or anything. All of a sudden some lines disappear, some appea开发者_如何学运维r, and the insertion point changes. This is only a visual issue, if I keep typing it will fix it self. Even so, it is very distracting. I also seem to recall it happening before and once I changed my insertion point or something the changes were no longer visual only