When I'm typing in a post, when I fill the text box and the scroll bar appears, the body of my message will not scroll up. I can continue to type, but I can not see what I'm typing. I can scroll down and see what I've typed, but as soon as I start typing again the text jumps back to the begining (although the curser does not jump).

Any ideas?

YMMV. Viewer discretion is advised.