ListView reuse Cell?

So I was fooling around with the TodoMVVM sample ( https://github.com/conceptdev/xamarin-forms-samples/tree/master/TodoMvvm) and I noticed in Instruments that when I scroll the list the number of UILabels keeps increasing and seems to never be released which eventually will lead to a crash.

Is there a way to modify the example so that the cells are properly release/reused?

Thanks.