If you enter through a nether portal frame in the end, it summons your player at a y value of 32765, and into a "husk overworld".
Here are my findings:
Teleporting to a set location (ex 0, 70, 0) using /tp will create a "husk" character of which entitys will try to attack. They can hit that ghost entity, but no damage is delt to the player.
Using /summon or /fill will put the object or block you summoned in the position of your "husk".
Trying to break blocks works, but nothing will drop and no breaking sound will play. The player can also place an infinite amount of blocks, even if they only have 1 in their hot-bar.
It is impossible for the player to die, using fall damage, entity damage or even /kill does not work. (Edit note: Explosions do kill the player, and returns them back to the regular overworld.)
Entering a portal does not work.
You cannot damage entities.
Bug fixes when reloading world, blocks you broke were never actually broken, and mobs will immediately start attacking you. You will spawn where your "husk" character last was.
Entering the End through the Nether works as intended. The player will go to the end and can go back to the overworld once the dragon dies.
Even though my video was recorded in 1.16.0.63, this bug is still active in 1.16.0.64
Thank you for your report!
We're tracking this issue in MCPE-34142, so this ticket is being resolved and linked as a duplicate.
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