MultiSelection doesn't work when changing page

[Inspirateur]

When using multi selection in paginated Grid, the selection is erased whenever the user changes page, which is not desirable behavior.

I suspect it has something to do with this line:

blazorbootstrap/blazorbootstrap/Components/Grid/Grid.razor.cs

Line 538 in 99558d9

: selectedItems?.Intersect(items!).ToHashSet() ?? new HashSet<TItem>();