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@spiegelp Been trying to implement this but triggering OnAutocompleteSourceItemsChanged() does nothing on my side (until I type something again), do you have any sample code to share ? public class...

@spiegelp , I tried that but despite the fact that the event fired correctly, the list is still not refreshed until I type something or clear the box.

@spiegelp Even when I get the focus on it the list is still not updated, I have to type something inside of it to see a change.

@spiegelp I've been trying to fix this issue again a few days ago and it's still present for me. I've made a little app to demonstrate the problem. Here a...

Also, when I add PresentationTraceSources.TraceLevel=High to the MenuItemsSource property binding, I get the following : ``` BindingExpression (hash=30400195): GetValue at level 0 from NavigationViewControlViewModel (hash=39567352) using RuntimePropertyInfo(NavigationItems): ObservableCollection`1 (hash=17472816 Count=2)...

Tried with the latest 3.0.0-preview.8 and the issue is still present.