I do have hot fix 3.
So went back and checked. It seems when I hover the first time and wait, I still don't see the data. But then if I move the mouse and hover again, then it is showing the data. I checked this for "int", "String" and "Cell" (from Apache POI) types.
It seems I have to go back and hover a 2nd time to see it - would like it the first time. Didn't realize I had to wait, but even waiting it doesn't seem to appear the first time.