spectating a mob does not show the texture of effects

when i was exploring a world with spectator, i ran into what i thought was a bug. i had night vision on and it appeared in the top right corner of my screen. but when i spectated a creeper for a yt video, i saw a white box in the top right corner of my screen, when i got out of spectating the mob, i saw my effects as normal... this may be my computer or the fact that the seed was the 64 bit integer limit. the time i discovered it, i made another world and the bug still applied :/  [ the black image was the other world, and the green was the 64 bit ]