Can not load debug symbols from NETStandart Project into UWP Project

I migrate from PCL to .NETStandart, the app run ok, but, do not debug code into Core project.

I obtain "Cannot load debug symbols", in the output windows show this.

'Quantica.Mobile.Core.UWP.exe' (CoreCLR: CoreCLR_UWP_Domain): 'D:\Workspaces\Quantica\Quantica.Mobile.Core\Quantica.Mobile.Core.UWP\bin\x86\Debug\AppX\Quantica.Mobile.Core.dll' cargado. No se encuentra el archivo PDB o no se puede abrir. (Cannot find PDB File)

If i copy this file (Quantica.Mobile.Core.pdb) manually from Debug folder, the break point work, else not.

I have Xamarin.Forms 2.5.0.122203 and Visual Studio 15.5.3 (I updated Visual Studio after migrate to .netstandart)

Any suggestion?