What could cause a Dapper cast to fail?

I am using Dapper to execute a very simple query:

const string query =
          "SELECT measurement From Table;";
return connection.Query<Foo>(query);

with foo defined as follows:

public class Foo
{
    public object measurement { get; set; }
}

It works perfectly. If I inspect the resulting object, Measurement is a double.

However, if I explicitely type Measurement as a double:

public class Foo
{
    public double measurement { get; set; }
}

Dapper throws an exception:

System.Data.DataException: 'Error parsing column 0 (measurement=4.64518928527832 - Double)'

Since typing as object works, it is not too annoying, but I would like to understand what causes this behavior.

Edit: Doing the same thing the old-fashionned way works perfectly fine with measurement typed as a Double

using (connection)
            {
                connection.Open();
                var cmd = connection.CreateCommand();
                cmd.CommandText = "SELECT measurement From Table;";
                Foo foo= new Foo();
                using (IDataReader reader = cmd.ExecuteReader())
                {
                    reader.Read();
                    foo.measurement = reader.GetDouble(0);
                }
            }

Edit2: Neither the stack trace

Dapper.SqlMapper.ThrowDataException(Exception ex, Int32 index, IDataReader reader, Object value)

nor the inner exception

System.InvalidCastException / "The specified cast is invalid"

are very useful.