vertical scrollerbar always visible in vaadin 8 grid

Vaadin 6 / 7 / 8 Framework UI
1

I would like to make vertical scrollerbar always visible in vaadin 8 grid.
Why? Because if vertical scrollerbar appears, the columns move a bit to make space for vertical scrollerbar. So I would like vertical scrollerbar to stay always visible so that columns will always be in the same position.
I have tried variation of, but can not make it work:

in java:

ordersGridDetail.addStyleName("gridAlwaysScrollbar");

in scss:

.gridAlwaysScrollbar .v-grid {
  	.v-grid-scroller-vertical {
		overflow-y: scroll !important; 
	}
}

There is some info on https://vaadin.com/forum/thread/10624506/10679832 but I have no success.