Here's a bug I recently noticed. I can scroll with the wheel fine. I can scroll with the keypad fine. I can even scroll with the wheel and then switch to scrolling with the keypad fine. But if I scroll with the keypad and then switch to scrolling with the wheel, it jumps to the last place to which I scrolled with the wheel (so the beginning if I haven't scrolled with the wheel at all). It doesn't matter if I'm scrolling in the same direction or if I switch. The only time this doesn't happen is if I use the 1 to jump to the top or the 7 to jump to the bottom.