I'm having a problem with one of the springs in the bonus level in 3-9.
Basically, at the part when you're falling down the platform the second time (at the 2:12-2:13 mark), you're supposed to use the spring to get the gold bars. For me though, the spring doesn't work at all. Even when he's falling, I keep my finger on the up key, but nothing happens. He just keeps running instead of using the spring. I don't have this issue when you're falling down the platform the first time (1:59-2:00 mark).
So I was wondering if it's some kind of bug, am I doing something wrong, does that happen to anyone else, etc.