Black note 3 visible rectangle in i=one of the sensors

[garciaop]

so i went on to best buy and at the samsung showroom notice that the note 3 has a little rectangle in the right sensor next to the front camera , so i got mine black and did not have it cause i checked but then i went to exchanged it for some reason , i got the same color black and checked the sensor and this one has it does anybody else notice this too?

i saw the white they had in there doesnt have it