Bar progress is pixeled

[KarlosQ]

The bar progress is pixeled. See the image:

the part unprogress is ok

The code

            <Bar
              progress={0.5}
              width={null}
              color={'#36b0c9'}
              animated={false}
              borderWidth={0}
              unfilledColor={'#000000'}
              height={16}
              borderRadius={12}
            />

Environment Android 6.0 600x976