Microsoft Edge touche event support missing

I found Microsoft Edge is not complete and touch events doesn't work.

To understand the problem you can download this

https://code.msdn.microsoft.com/ie/Pointers-and-Gestures-ae95918f/view/Discussions

With IE11 works, with Edge no.

Even if you digit in the address bar about:flags and enable touch events it still doesn't works.

When this will be implemented? I have an universal app stopped for this problem and I risk to do the downgrade to Win 8.1.

Thanks