While messing around with a sugar cane farm, i went to go make a health boost potion using commands, while doing so i equipped a Elytra and went to the nether. I drank the potion, went into Survival mode and went into the nether.

i built cobblestone around the portal till i noticed that my health boost potion wasn't working.

i tried to fly using the elytra and some fireworks, but it just wouldn't let me.

I then touched lava to see if it would come back, but i touched the lava like i was in creative, but im in survival.

i then met up with a few zombie pigmen, and smacked one of them to see what would happen. They starting chasing me like normal, but whenever i got it, the health boost potion wasn't working and i had just the default health and whenever i got hit, no sound came out.

i then went back to the overworld, and noticed that my health boost still hasn't loaded.

then i started taking damage like i was on fire and i "died"

So when i clicked to respawn...

i didnt.

i went into creative and went to the survival inventory and i was red and slanted like i was doing the death animation.

i pressed F5 to see if i looked like that, but i was glitching around in the death animation. i then spawned 3 creepers to see if they would notice me, and they did. i killed 2 of then with a wooden sword to see if that would work and that did, but i let one of the creepers explode in my face, and i died for a second time.

How to replicate this glitch:

Step one: Get yourself a Health boost potion or Use commands like /effect give @p minecraft:health_boost and set it to a power of 10 and hide particles to true

Step two: build a nether portal and go into it.

Step three: Health boost hearts gone, and then its activated.

Step four: go to the overworld and then you will get burned without fire.