Weird behaiour of conditional operator, C#

Weird behaiour of conditional operator

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public struct  /*(1)*/ Value {
            public int MagicNumber { get; private set; }
            public void Increment() {
                MagicNumber++;
            }
        }
    
        public static void Main(string[] args)
        {
            Value v1 = new Value(), v2 = new Value();
            Console.WriteLine("v1 = {0}, v2 = {1}", v1.MagicNumber, v2.MagicNumber); // 0, 0
            
            bool condition1 = true;
            (condition1 ? v1 : v2).Increment();
            Console.WriteLine("v1 = {0}, v2 = {1}", v1.MagicNumber, v2.MagicNumber); // still 0, 0
            
            const bool condition2 = true;
            (condition2 ? v1 : v2).Increment();
            Console.WriteLine("v1 = {0}, v2 = {1}", v1.MagicNumber, v2.MagicNumber); // now 1, 0
        }
    }
}


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