PopAsync() on a page with a ListView results in NullReferenceException

I am having a slight issue with on Page containing a ListView. When I Pop the page the call

await Navigation.PopAsync();

results in a NullReferenceException with the following stack trace:

System.NullReferenceException: Object reference not set to an instance of an object

Thread finished:  #8
2015-02-26 10:45:36.059 DerpAppiOS[2113:277365] Unhandled managed exception: Object reference not set to an instance of an object (System.NullReferenceException)
  at Xamarin.Forms.Platform.iOS.ViewRenderer`2[Xamarin.Forms.View,UIKit.UIView].Dispose (Boolean disposing) [0x00000] in <filename unknown>:0 
  at Foundation.NSObject.Dispose () [0x00000] in /Developer/MonoTouch/Source/maccore/src/Foundation/NSObject2.cs:131 
  at Xamarin.Forms.Platform.iOS.Platform.DisposeModelAndChildrenRenderers (Xamarin.Forms.Element view) [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Platform.iOS.ViewCellRenderer+ViewTableCell.Dispose (Boolean disposing) [0x00000] in <filename unknown>:0 
  at Foundation.NSObject.Dispose () [0x00000] in /Developer/MonoTouch/Source/maccore/src/Foundation/NSObject2.cs:131 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer.Dispose (Boolean disposing) [0x00000] in <filename unknown>:0 
  at Foundation.NSObject.Dispose () [0x00000] in /Developer/MonoTouch/Source/maccore/src/Foundation/NSObje
ct2.cs:131 
  at Xamarin.Forms.Platform.iOS.Platform.DisposeModelAndChildrenRenderers (Xamarin.Forms.Element view) [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Platform.iOS.Platform.HandleChildRemoved (System.Object sender, Xamarin.Forms.ElementEventArgs e) [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Element.OnDescendantRemoved (Xamarin.Forms.Element child) [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Element.OnChildRemoved (Xamarin.Forms.Element child) [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Page.OnInternalRemoved (Xamarin.Forms.VisualElement view) [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Page.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00000] in <filename unknown>:0 
  at System.Collections.ObjectModel.ObservableCollection`1[Xamarin.Forms.Element].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00014] in /Developer/MonoTouch/So
urce/monotouch/_build//Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Collections.ObjectModel/ObservableCollection.cs:161 
  at System.Collections.ObjectModel.ObservableCollection`1[Xamarin.Forms.Element].RemoveItem (Int32 index) [0x0001a] in /Developer/MonoTouch/Source/monotouch/_build//Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System/System.Collections.ObjectModel/ObservableCollection.cs:182 
  at System.Collections.ObjectModel.Collection`1[Xamarin.Forms.Element].Remove (Xamarin.Forms.Element item) [0x00011] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Collections.ObjectModel/Collection.cs:134 
  at Xamarin.Forms.NavigationPage+<PopAsyncInner>d__1e.MoveNext () [0x00000] in <filename unknown>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000b] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.Exceptio
The thread 0x8 has exited with code 0 (0x0).
nServices/ExceptionDispatchInfo.cs:62 
  at System.Runtime.CompilerServices.TaskAwaiter`1[Xamarin.Forms.Page].GetResult () [0x00034] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.CompilerServices/TaskAwaiter_T.cs:59 
  at Xamarin.Forms.NavigationPage+<PopAsync>d__16.MoveNext () [0x00000] in <filename unknown>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000b] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:62 
  at System.Runtime.CompilerServices.TaskAwaiter`1[Xamarin.Forms.Page].GetResult () [0x00034] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.CompilerServices/TaskAwaiter_T.cs:59 
  at DerpApp.Pages.DerpListPage+<toolBarView_LeftClick>d__e.MoveNext () [0x0001e] in c:\vcs\git\derp-app4\Source\DerpApp\DerpApp\Pages\DerpListPage.cs:188 

Looking at the trace, it seems like it is disposing of all the views in the hierarchy, however something, somewhere is already null or been disposed off and now when trying to dispose it, an error is thrown.

This is on latest stable Nuget of Xamarin.Forms 1.3.4

Now wrapping it in a try/catch solves this temporarily, but which implications does that have?