Teleporting to an Ancient City generated perfectly fine with amazing loot to find!
Teleported to an Ancient City generated half waterlogged, starting with a chunk piece known as “Portal” or the big statue that looks like the head of the Warden.
Steps to reproduce
-Play Minecraft Preview version 22.214.171.124.
-Create world with seed: 1064444120887942471
-Teleport to coordinates: -744, (y?), -1816