Dart Grid : setting the selected indices on a hidden grid do not update pos

I have a V1.1 grid that is not visible. When I set its selected indices by this code, it works the first time only.

_grid.selection.callMethod('clear');
_grid.selection.callMethod('select', [n]);

Subsequent calls to the code above with different indices does not update the grid when it becomes visible. The first selection lingers, and only the new selections take hold once a "selected" row is clicked.

I've tried calling "updateStyles" and "refreshItems" but no luck.

I was wondering if there is a method I can call to enforce a redraw/update/refresh on the selections.

Thank you.
 

I tested out with grid found in our marketing site: https://vaadin.com/elements/-/element/vaadin-grid. Selection should be done by only with one row:

$0.selection.clear();
$0.selection.select(n);