ExpandRows / CollapseRows methods don't work

Radzen.Blazor Components
1

Hello. ExpandRows(IEnumerable) and CollapseRows(IEnumerable) methods doesn't work for RadzenDataGrid.
I tried using the original collection of nodes and filtered collection (having passed a preliminary test for current expanded state) as an argument. I also tried combining this with Reload method and update interface through StateHasChanged(). It's all useless.
The only way to expand nodes from code is to manually iterate over nodes and call the ExpandRow(TItem) method.

But for collapsing this is literally impossible because there is no similar method for one specific node.
Why those methods doesn't work and how to solve this collapse problem?

2

Works normally on our demos:

expandrows

3

Thanks for the hint. Now I realized that the ExpandMode="DataGridExpandMode.Single" property simply blocked the operation of those methods. Now I changed it to "DataGridExpandMode.Multiple" and everything worked.