The FlexGrid relies on the CollectionView class to perform data operations
including sorting, filtering, grouping, paging, change tracking, etc.
By default, the CollectionView refreshes and re-sorts the data after any edits.
You can change that behavior by setting the refreshOnEdit property to false.
If you do that, the CollectionView will no longer re-sort the data when you
edit items. It will sort only on demand, when the user clicks a column header cell.