Prior to the recent software update, when I was on a call the proximity sensor would correctly turn the screen black until I took the phone from my ear at which point I'd get the call screen and could press "end" to hang up. Since the update, when I take the phone from my ear, it stays dark and I have to press the power button to bring up the lockscreen and unlock it to end the call or wait til the other party disconnects.
Anyone else been experiencing this? Any suggestions or fixes?