Crash-to-desktop TextChanged

Here comes another code that crashes Fuse Tools.

ux:

<App Theme="Basic" ClearColor="#fff">
    <StackPanel>
        <TextInput TextChanged="changed" />
    </StackPanel>
</App>

Uno:

public partial class MainView
{
    void changed(object sender, TextChangedArgs args) {
        TextInput origin = (TextInput) sender;
        origin.Text = args.OldText;    }
}