Currently Being ModeratedDec 11, 2012 6:29 AM (in response to Howard Brazee)
I found what caused the problem. Apple changed the way to scroll these windows. To get to the bottom apps, I need to move the cursor outside of that window (to the right), and scroll both the Apps and Documents windows together.
The fact that the apps window appears to start to scroll seems to be a leftover.
Trouble is, that means the documents also scroll off the top, so I have to find the app I want, select it, then scroll back to see the documents associated with that app.