When I set the render distance to 32 chunks, some chunks seemed to be rotating through a bunch of different environments as I moved or looked around. trying to land on it and get it to load didn't help, nor did updating blocks in the affected area. I've included a video (I don't have a way to record the screen other than with my cell phone, sorry for the quality) of what is happening, since it's not easy to describe. I'll also include a screenshot with the debugging screen.

I can't post the video, but here's a link to youtube where I've posted it:

http://youtu.be/HmdkkVqaKw4

Sorry if this isn't done correctly, it's my first time playing anything other than current, live content and so it's my first bug report.