(in series of use of the "Rifted Chunks Challenge" map) I have a sad issue regarding one of my worlds, downloaded from the Minecraft Webstore. Due to the fact that it takes multiple attempts of un and reloading the world, your results may not appear. After multiple sessions started and stopped on this world, "Rifted Chunks Challenge", I first noticed that chunks outside of my simulation distance were not loaded, upon reloading, chunks reappeared. After a few more sessions of the non-multiplayer server, I rejoined the game to absolutely 0 chunks loading, falling into the void, dying instantly, each and every respawn. The server delay reading "2ms", meaning chunks weren't loading and were permanently lost. I attempted to copy the world after multiple attempts of reloading the world, but to no avail. "Failed to make a copy of this world." filled the top of my screen. I went into creative, and realized that the coordinates were identical to the spawn point, meaning all chunks were permanently lost.
Prior to the failure of the world, the map is composed of 25 chunks, with man made structures and ore spawns to give the appear of only 25 chunks, spread out the map. All other chunks were void, of which was intentional, and was a feature of the map. Now every chunk is void, and all entities, containers, command block functions and blocks are lost; the world corrupted. Please note the world crash happened after opening the end portal, which triggers a message from the world after opening, completing a challenge, after unloading and reloading the world, all chunks were non-existent, and the world was corrupted; unable to be copied.