NSInternalInconsistencyException On ListView When Setting Row Height

I'm trying to set row heights on a ListView but keep getting the following exception:

MonoTouch.Foundation.MonoTouchException: Objective-C exception thrown.  Name: NSInternalInconsistencyException Reason: Invalid update: invalid number of rows in section 0.  The number of rows contained in an existing section after the update (1) must be equal to the number of rows contained in that section before the update (23), plus or minus the number of rows inserted or deleted from that section (1 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).
  at MonoTouch.ObjCRuntime.Runtime.ThrowNSException (IntPtr ns_exception) [0x00000] in /Developer/MonoTouch/Source/maccore/src/ObjCRuntime/Runtime.cs:156
  at MonoTouch.ObjCRuntime.Runtime.throw_ns_exception (IntPtr exc) [0x00000] in /Developer/MonoTouch/Source/maccore/runtime/Delegates.generated.cs:100
  at at (wrapper native-to-managed) MonoTouch.ObjCRuntime.Runtime:throw_ns_exception (intptr)
  at at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging:void_objc_msgSend (intptr,intptr)
  at MonoTouch.UIKit.UITableView.EndUpdates () [0x00010] in /Developer/MonoTouch/Source/monotouch/src/build/compat/UIKit/UITableView.g.cs:255
  at Xamarin.Forms.Platform.iOS.ListViewRenderer.UpdateItems (System.Collections.Specialized.NotifyCollectionChangedEventArgs e, Int32 section, Boolean resetWhenGrouped) [0x00000] in <filename unknown>:0
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+<>c__DisplayClass5.<OnCollectionChanged>b__4 () [0x00000] in <filename unknown>:0
  at MonoTouch.Foundation.NSAsyncActionDispatcher.Apply () [0x00000] in /Developer/MonoTouch/Source/maccore/src/Foundation/NSAction.cs:164
  at at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
  at MonoTouch.UIKit.UIApplication.Main (System.String[] args, IntPtr principal, IntPtr delegate) [0x00005] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:62
  at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:46
  at CBP.iOS.Application.Main (System.String[] args) [0x00008] in /Users/Will/Projects/CustomBuildingProducts/iOS/Main.cs:17

I currently have HasUnevenRows set to true and I am setting a RowHeight. If I try different values for row height it will stop crashing for some screen sizes.

Example: RowHeight of 220 on iPhone6 works, RowHeight of 220 on iPhone 4s crashes

I'd like to eventually make the heights dynamic but the row heights seem to be unreliable.