Default Volume problem when in call, kitkat

Hi
I update to kitkat 4.4.2 today I'm positive surprised.
But i have one problem an that is when i talk and want to adjust the loud so i can here the person better, the screen is black because the sensor turn it black (off) then i can put volume max one time and go min one time that's it, if i want adjust more up and down i need to take the phone from my ear so the screen light up, then i can do the same one more time, one time up and one time down, but if i turn of the sensor so the screen is on when i talk, i can put volume up and down how many time i want. What can i do? Someone else that have the same problem? I have no rooted s4 with stock 4.4.2

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