I am having an issue with my phone not reacting correctly to the proximity sensor. When I am in call, the screen shuts off when I put the phone to my face like it is supposed to, however when I remove it from my ear the screen doesn't come back on. I tested the sensor with an app called sensor list, and it is without a doubt working correctly. I have a custom kernel installed. Could that be causing my issue, or is the software just bugged?