using System;

namespace SOE2
{
    class Program
    {
        static void Main(string[] args)
        {
            // vvv--- changing "dynamic" to "var" or "string" here fixes the issue
            dynamic parsedDocument = "";

            var mystery = new FailingClass<string>();

            Console.WriteLine("Entering...");
            mystery.FailingMethod(parsedDocument);
            Console.WriteLine("... and we are back!");
            Console.ReadLine();
        }
    }

    public abstract class CommonBase<T>
    {
    }

    // Technically, this class does nothing and deriving from it should be identical to deriving from CommonBase
    public abstract class FailingClassBase<T> : CommonBase<T>
    {
    }

    // However, deriving from CommonBase instead of FailingClassBase here also fixes the issue
    // ----------------------------vvvvvvvvvvvvvvvv
    public class FailingClass<T> : FailingClassBase<FailingClass<T>>
    {
        public void FailingMethod(T src)
        {
        }
    }
}