It is the ghost armor. Sam thing happens with ZAGG. I have to cut the bottom part out for several people because of it. I didn't for my own phone because hearing of all the response issues on forums, I thought it was the phone. But it isn't. Screen protectors that go over the buttons make them unresponsive. I believe HTC is pushing an update to increase the sensitivity of the buttons so that they can work with screen protectors.
Posted via Android Central App