Red Ball Forever

It's strange that in Level 9, you're supposed to jump onto a rock and then jump from it to the finish line. BUT when I jump onto the rock with the ball, the ball teleports right through it. I don't know if the game is that bad or if it's just my computer.

So, Level 9 is total nonsense. You can't use the ball to jump to the finish line. FIX THIS!!!

I've played through 5 levels so far. It's a classic game with cute graphics. But the ball is obviously glued to things (it sticks to them), and gravity doesn't seem to affect it—or if it does, it's really weird. :D