In vaadin 22 grid Items are not getting selected when select all check box is clicked on UI

Question

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.

Thanks in advance.