Bug that lets you scaffold with blocks for unlimited period of time while sprinting

So, a few months ago I have discovered this bug. I didn't report it because I was actually thinking it will be patched soon, but today I have decided to see if it still works and.. it does.

So, you basically walk off a block ( must be a one block fall so you can build a block directly under yourself), and hold the right mouse button, and you will be scaffolding infinitely. Works both in survival and creative.

 

I don't think that's a problem on this particular version because, as I said - I have encountered it before.