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KeyNotFoundException when updating ItemsSource of SfRotator in UWP

SfRotator 16.4.0.54, 

Xamarin.Forms 3.5.0.169047

Visual Studio 2017 15.9.7


I've got a KeyNotFoundException when im updating the ItemSource of a SfRotator in UWP.


StackTrace:

   at System.ThrowHelper.ThrowKeyNotFoundException()
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at Syncfusion.UI.Xaml.Rotator.SfRotator.ItemsCollectionChanged()
   at Syncfusion.UI.Xaml.Rotator.SfRotator.OnItemsChanged(Object e)
   at Xamarin.Forms.Platform.UWP.TaskExtensions.<>c.<WatchForError>b__2_1(Object e)
   at System.Threading.WinRTSynchronizationContextBase.Invoker.InvokeCore()


The iOS and Android version works fine. 

I have attached an example solution to recreate the problem.