Teleporting to /tp @a 28999999 120 0 causes a crash, attached crash report.
Game does not generate chunks if teleporting to /tp @a 28999999 120 28999999
Disconnecting from singleplayer and reloading the world teleports back to spawn.
Loading into a world that has crashed due to this "chunk out of bound" error it will crash again instead of loading the world. This renders the world useless.
This crash also affects servers, servers instantly shut down.
Teleport near the worldborder and place down chests and open them, with headphones you can hear the chests opening behind you like the same way crystals spawn behind you when you place them on obsidian near worldborder.