Duc ANh Vu Ngoc

Here's the world folder, compressed as a zip file, uploaded to Google Drive:

https://drive.google.com/open?id=1AuviU12oPEv0uuFKsUJcMKZWP_8HRijy

Oh, and if there is anyway to reverse this... please let me know. I spent quite some time on the 2-spawner cave spider dungeon.

And something I forgot to mention in the report: All entities inside the affected area disappeared.