Filtering of DataGrid bound to ObservableCollection

[Big-Iron-Cheems]

Describe the bug

I have a DataGrid as follows:

<DataGrid ItemsSource="{Binding FilteredModList}"> ... </DataGrid>

It is then bound to an ObservableCollection that I filter via the following binding:

<TextBox Margin="10" Text="{Binding SearchText}" />

In the debugger, stepping through my filter function, I can see that it has the intended amount of elements, yet the view does not render the correct amount.

To Reproduce

Create a DataGrid bound to an ObservableCollection, apply a filter operation on said list, see the view not updating the rows correctly.

Expected behavior

The DataGrid should respond correctly to filters/insertions on said list, and show the correct amount of rows.

Avalonia version

11.0.10

OS

Linux

Additional context

Code related to said DataGrid:

Example of list not returning to original state:
https://github.com/AvaloniaUI/Avalonia/assets/52252627/19e46003-88aa-4c74-b685-c401f28e9300

For further context: I implemented the same mechanic using ItemsControl and ItemsControl.ItemTemplate and executed the program (keeping the DataGrid impl for double checking) and in that case only the ItemsControl impl responds as intended.

[maxkatz6]

Ideally, you shouldn't recreate input collection, but instead modify it. Removing filtered out items, adding new items. Or at least a combination of Clear+AddRange. "Observable" part of the ObservableCollection isn't utilized in your code.
DynamicData library can also help with filtering scenario.

But other than that, your code should also work, seems like a bug.

[Big-Iron-Cheems]

Thanks for the response, I'll try using the DynamicData lib as you suggested, total newbie here.
Hopefully this gets addressed and fixed.