Fire Resistance potions don't "survive" Snow golems on Heat Biomes???

For the Android device see it on the photo. Snow Golems keep dying even under Fire Resistance? Isn't it should be no longer take damage by the fire?? NOTE: I spawn a Snow golem, I threw the Fire Resistance potion, then Died... If you see on the photo you'll see the effect (orange particles) on the snow golem that died..