I have the same problem, Just bought 2 pcs s+ quality screen from etradesupply and a screen from ifixit. they all suffer the same. touch issue after a short while. Do you think Apple is doing this with purpose?
Had the same problem several times. My problem was not the sensor but the replacement screen. When I changed replacement screen with a new one it was working again. (screen going black under a phone call when the sensors was covered) I know, it's strange.
I just have the same problem. I tried with more/less tape, and tried to "build" down the home button connector, but still no success. I had some other replacement screens in my store. And when I tried a new one, it works... no problem with the homebutton.