I'm having problems with my posting box. Everything works well until I get to the bottom of posting box. Then, it seems to stop moving. You can still scroll down to read it, but the minute you start typing, everything below the original bottom goes back to hidden until you type, and then the newly typed letter bounces the entire screen up so you can see it briefly and drops it back down. Very reminiscent of the old fashioned manual typewriters, but at the same time extremely annoying.
How do I stop this?