Prank

Not sure if it has to do with the config files that are making changes to my world or if its just a bug, any info on this would be great. examples: few days ago it changed 4 chunks it just deserts and made huge holes yesterday was just a random little ruin and then today was a battle tower. thanks.

update: Now a random ruin popped up 40 blocks away from my house is this something that happens or what

Still looking for some answers so this doesn't happen again.

Picture of another one i found, its not just a visual error, also when i go inside it shows it as a desert

found another huge chunk missing a ways away from where im building.

So, i log into my server and i fall down a huge chunk square, and its all just gone. took off part of my house and everything. is there a reason this happened.its happened twice