Everytime you throw an ender pearl into the "Enter" portal for the end city, you get merged into the bedrock and start taking damage... Only way out is to constantly try to ender pearl your way out. Sometimes it works and teleports you and sometimes you'll just sit there and nothing happens and you just keep taking damage as you're failing to ender pearl yourself out of the bedrock. Either make the end city portals a two block tall portal or just fix this bug. I am actually aiming at the purple portal block, I am not missing it. This bug has happened every single time I have went to the end cities... I've died from this before and my enchanted tools and armor, as well as everything on me has almost fell into the void. That goes for my friend too, we both have had the exact same issues.