Visual Studio 2013, Server Explorer: Could not retrieve the definition of [dbo].[Trigger] from the server

When I try to open a trigger in VS2013 Server Explorer (I use database user SA and local instance of SQL Server Standard), I get this error

/*
Could not retrieve the definition of [dbo].[Trigger_Name] from the server
*/

No error is genereted when I open stored procedure or function.

In VS2012 and VS2008 everything works fine.