Problem building in release mode with linking

Hello,

I have some problems building my android app in release mode with linking enabled. I only have an android target at this point.

I get the following exception:

Error   5   The "LinkAssemblies" task failed unexpectedly.
Xamarin.Android.XamarinAndroidException: error XA2006: Reference to metadata item 'Android.Gms.Maps.Model.Marker Android.Gms.Maps.GoogleMap/InfoWindowClickEventArgs::get_P0()' (defined in 'Xamarin.Forms.Maps.Android, Version=1.3.0.0, Culture=neutral, PublicKeyToken=null') from 'Xamarin.Forms.Maps.Android, Version=1.3.0.0, Culture=neutral, PublicKeyToken=null' could not be resolved. ---> Mono.Cecil.ResolutionException: Failed to resolve Android.Gms.Maps.Model.Marker Android.Gms.Maps.GoogleMap/InfoWindowClickEventArgs::get_P0()
   at Mono.Linker.Steps.MarkStep.MarkMethod(MethodReference reference)
   at Mono.Linker.Steps.MarkStep.MarkInstruction(Instruction instruction)
   at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
   at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
   at Mono.Linker.Steps.MarkStep.ProcessQueue()
   at Mono.Linker.Steps.MarkStep.Process()
   at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
   at Mono.Linker.Pipeline.Process(LinkContext context)
   at MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext& context)
   at Xamarin.Android.Tasks.LinkAssemblies.Execute()
   --- End of inner exception stack trace ---
   at Xamarin.Android.Diagnostic.Error(Int32 code, Exception innerException, String message, Object[] args)
   at Xamarin.Android.Tasks.LinkAssemblies.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext() Werkak.Mobile.Android

I am using Xamarin.Forms and Xamarin.Forms.Maps, both version 1.3.0.6284-pre3.

Any ideas what could be wrong? Release builds without linking works, but gives me a 42 MB apk for a pretty small app..