Xcode text rendering bug?

Sometimes in Xcode, when I am towards the end of a file, the editor starts scrambling the lines. I have a video of it below. You can see when I close the bracket the text goes back to normal:

http://vimeo.com/18678901

Any idea if there are ways around this? Restarting Xcod开发者_如何学Pythone doesn't help.

Looks like a bug. Please file that on bugreporter.apple.com along with the version of Xcode you were using at the time. If it's reproducible and you can attach the project/file to the bug, please do. For extra credit, post the bug # here so I can follow up on it, thanks.

P.S. Please check the Console for silent exceptions from Xcode. My colleague reminded me to ask you about this.