The solution is to override the GridView to set the space to 0.
public class CustomGxtGridView<M> extends GridView<M> {
private static int SCROLL_OFFSET = 1;
public CustomGxtGridView(...) {
super(viewMediator);
this.scrollOffset = SCROLL_OFFSET;
this.vbar = false;
this.setAdjustForHScroll(false);
}
@Override
protected int getScrollAdjust() {
return 0;
}
}