Add/remove CSS will cause IE9 to increase the table’s height

Here’s another possible fix that also seems to work in my case.

Setting ANY margin (top, right, bottom, left, or any combination) to ‘auto’ seems to solve it.

div.grid-body {
    margin: 0px auto;
}

Or:

div.grid-body {
    margin-top: auto;
}

Etc.