Thank you for looking into this issue :)
When I read that you weren't able to recreate the issue, I went ahead and tested it on another computer. At first I did beleive that I wasn't able to recreate the issue, but it turns out the second compute I tested was just much faster. If you pay attention, you can see it happening, altought much more subtile.
The 2 computer I have tested run Visual Studio 2017 professional with Windows 10 Home for 1 and windows 10 pro for the other. Spec wise, you are looking at a I7-3770 with 16 gb of rams for computer 1 and a I7-7700 with 16 gb ram for computer 2.
The exact step to recreating the issue is simply running the solution I've provided. I've made the following video to help you recreate the issue and provide some more explanation : https://drive.google.com/file/d/0B9yNrE596_TZSUxqcGkzY2t0VjQ/view?usp=sharing
I hope this helps you with reproducing the issue. Let me know if I can help further.