What's "gridbar"?

>Hi all,
>
>VFP 8 released version.
>
>I've noticed a visual side effect in the grid when the new native gridbar is used. On several occasions where the grid is empty certain 'rows' are colored with the same color as the gridbar itself. On a next refresh they are gone.
>
>I've tested this on two different machines. The problem seemed to occur on both of these.
>
>Anyone seen this ?
>
>Walter,