We are unable to reproduce this crash, but our App.Center Analytics is reporting this error from some, but not all, of our customers
Version 2019.2.708
Crash::
System.NullReferenceException: Object reference not set to an instance of an object
IOrderedTraversalController.UpdateTraversalOrder ()
VisualElementRenderer`1[TElement].UpdateParentPageTraversalOrder ()
VisualElementRenderer`1[TElement].OnElementPropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e)
(wrapper delegate-invoke) <Module>.invoke_void_object_PropertyChangedEventArgs(object,System.ComponentModel.PropertyChangedEventArgs)
BindableObject.OnPropertyChanged (System.String propertyName)
Element.OnPropertyChanged (System.String propertyName)
Element.set_Parent (Xamarin.Forms.Element value)
RadViewContainer.DetachInnerView ()
RadViewContainer.set_View (Xamarin.Forms.View value)
SideDrawerRenderer.RetireViewContainer (Telerik.XamarinForms.Common.Android.RadViewContainer viewContainer)
SideDrawerRenderer.RetireMainContent ()
SideDrawerRenderer.RetireViewContainers ()
SideDrawerRenderer.OnElementDetached (Telerik.XamarinForms.Primitives.RadSideDrawer oldElement)
AndroidRendererBase`2[S,T].Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
Platform+DefaultRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
Platform+DefaultRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
Platform+DefaultRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
Platform+DefaultRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
Platform+DefaultRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
Platform+DefaultRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
Platform+DefaultRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing)
PageRenderer.Dispose (System.Boolean disposing)
Object.Dispose ()
FragmentContainer.OnDestroyView ()
Fragment.n_OnDestroyView (System.IntPtr jnienv, System.IntPtr native__this)
(wrapper dynamic-method) Android.Runtime.DynamicMethodNameCounter.74(intptr,intptr)