The world I was in was a fully survival hard world that was originally created in 1.16. I had defeated the ender dragon and today decided to go back to get an elytra. I went into the end portal, it glitched, and suddenly I was in the middle of the air and falling into the void in the end realm. I went back to the end portal after losing all of my stuff, and it had spawned me here, no where close to the end portal to go home. It also had created an obsidian platform, which is odd.