title: In vaadin 22 grid Items are not getting selected when select all check box is clicked on UI
body: <p>I am using vaadin 22 grid with lazy loading. When I click on select all checkbox of grid, no item is selected except select-all checkbox on ui. While  debugging the code I obeserved that in grid selection listener, selected item size is equal to the number of items in grid. But on ui the selection for all the item is not reflected.</p>
  <p>Thanks in advance.</p>