Call AddTag method instead of command
MODIFY
WalletWasabi.Fluent/Views/Wallets/Receive/ReceiveView.axaml
WalletWasabi.Fluent/Views/Wallets/Receive/ReceiveView.axaml
<Button Classes="option"
Focusable="False"
Content="{Binding Label}"
- Command="{Binding SelectedCommand}"/>
+ Command="{Binding #LabelsTbx.AddTag}"
+ CommandParameter="{Binding Label}"
+ x:CompileBindings="False"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>

Call AddTag method instead of command