BlinkStick Strip: pulse() set first LED to black

[dublok]

For "BlinkStick Strip": calling pulse() with index > 0 set first LED to dark.

def first_led_black_error():
    stick = blinkstick.find_first()
    # all white
    for i in range(8):
        stick.set_color(0, index=i, name='white')
    # pulses 4th LED but first LED gets black
    stick.pulse(0, index=4, name='red', repeats=3)

[Findarato]

Does your code ever result in the first led lighting up?