File Manager refresh changes the selected item.
Refresh should not change the selected item if it is available after refresh.
If the selected item is not available after refresh, Preview pane should show No File Selected.
https://demos.telerik.com/aspnet-core/filemanager
Select Documents folder in Tree View then Excel Document in List View. Excel Document is shown in the Preview pane.
Refresh the File Manager using jQuery in Console.
$("#filemanager").getKendoFileManager().refresh()
Excel Document is not selected and Preview pane shows Documents.
Refresh changed the selected item.
Selected file does not change after refresh.
Example Windows File Explorer. Select a file in the folder and press F5 to refresh the folder.