Flaky scrolling behavior

I know I posted this question earlier, but for the life of me, I cannot find it in this forum. Navigating this forum is a bit perplexing.

I have a grid that has seven rows visible. When I load data into it (via a javascript array) I see the first seven rows and I can begin to scroll. But as soon as I roll over the grid, the first seven rows reappear and I can no longer scroll. This is extremely problematic.

I found the answer - apparently it is a known issue - setting the height for the grid (in the stylesheet) did the trick.