Cannot update nullable short property via ExecuteUpdate / SetProperty in v10 — casting (short?) or Convert.ToInt16 fails

[theunal]

Description

Using Npgsql.EntityFrameworkCore.PostgreSQL v10.0.0 with EF Core 10, updating a nullable short (short?) property via expression-based update fails.

Error

System.InvalidOperationException: 'No coercion operator is defined between types 'System.Func2[Entities.Concrete.User,System.Nullable1[System.Int16]]' and 'System.Int16'.'

Steps to reproduce

using (var context = new MyDbContext())
{
    context.Users.Where(u => u.Id == id)
        .ExecuteUpdate(u => u.SetProperty(u => u.LoginFailedCount, u => (short?)0));  // or Convert.ToInt16(0), or just 0
    context.SaveChanges();
}