Crap, I’m dumb. Pressing ‘x’ while hovering over a world element like dirt or tiles placed by the player DELETES THE GRID IT IS ATTACHED TO!!! 
I’m sorry about this. I originally planned it to be a debug feature for deleting elements from the current scene and forgot that it never actually checks if the game object under the cursor is a fluffy. Will be fixed in the official release. Just be careful not to fuck up your world during play.
Also, even male fluffies have breasts. Stay tuned.