I loaded the new update a couple days ago. The first couple worlds I played in were just fine, but then, I made a new world, went hunting for some cool-looking terrain, and at about x: 400, I reached a point where the whole world beyond it was glitched, blocks constantly changing and such. I tried restarting my client, and that wouldn't fix it. I deleted the world and started fresh, but the same thing happened, along with a weird, huge, constantly moving entity that appeared to be stuck in the ground. Can someone tell me I'm not the only one who this has happened to or at least how to fix it?
1.8 world gen and weird entity glitch