I worked extremely hard on my Skygrid, and I was honestly so happy I started it. I realized that I needed protection so I hid 2 sponges around my base, making sure that there were blocks surrounding both so no one could break them. But when I came back tonight my whole base was griefed, and everything was gone. I'm very upset about this, and hope that you fix this glitch so it doesn't happen to anyone else, because believe me, it sucks.
