IDataReader.GetRowParser<string>() throws exception

Using .NET Core 6
Dapper v 2.0.123

using Dapper;
using Microsoft.Data.SqlClient;

using var connection = new SqlConnection("Server=localhost;Database=Test;Integrated Security=True;Encrypt=False");

var reader = connection.ExecuteReader("select 'test' as col");
var rowParser = reader.GetRowParser<string>();

reader.Read();
string result = rowParser(reader);

Throws exception:

System.InvalidCastException: 'Unable to cast object of type 'System.Func`2[System.Data.IDataReader,System.Object]' to type 'System.Func`2[System.Data.IDataReader,System.String]'.'

reader.GetRowParser<object>(typeof(string))

works, but then extra unboxing is needed: string result = (string)rowParser(reader)

Start with the IDataReader.GetRowParser() call shown in the reproduction and compare it with the working GetRowParser(typeof(string)) overload. Verify the behavior against the provided SQL reader example; done means the generic string parser can be invoked without an InvalidCastException or extra unboxing.