Touch screen stop working on my Lumia 640 with Windows 10 Mobile Technical Preview?

[WPCentral Question]

If I am in a somewhat long phone call the touch screen stops working. When I complete the call nothing on the touch screen works and I am force to reset the machine. Does somebody know if this a problem with Lumia 640 on windows 10?

 

[anon(9550439)]

I too am using Lumia 640 and had the same problem. Unable to solve it, I have reverted back to 8.1. So sad.