REPLY BOX HIJINKS

I had an interesting experience when I was writing a rather lengthy reply to the Boss Project, long enough that it involved scrolling the reply box.

Needless to say, whenever I scrolled via the mouse wheel, I got something like that.

It didn't glitch whenever I scrolled via page up/down or the direction keys, just with the mouse wheel. I've only had this problem here, so I don't know if there's a glitch in the code here or if my browser is being silly. (I'm running Opera 9.25)

Opera v9.25