Hello,

Ok, so I went to play some Minecraft today, and I saw that there was an update so I installed it and it worked fine on a new world I had made (I had other worlds, but I wanted to check out all the new items first) and played around for a bit with the new stuff. I saved the world and quit it then went back on by accident (I meant to delete it) and I noticed that the hills were glitching and blocks almost seemed to be "flying" around. I thought that it was just a on-time thing and quit and deleted the world (after taking some screenshots.) I was building a city and I went on the world, only to discover that whatever happened in the other world I had created moments before, was happening in my older worlds too (by old I mean created sometime in September of last year.) Even a map I had downloaded was also affected. Blocks visually disappeared, hillsides were glitching, portions underground chunks were coming above ground, and there were these really strange... I'm not too sure what they were, but they moved and they looked like pieces of coloured construction paper folded in half, opening and closing. These "Construction Paper" things appear in the screenshot of the superflat world. I will provide screenshots. I'm not sure exactly how to recreate it... I think probably creating a new world might trigger it. I tried on Creative and Survival and it happened both times.

Thanks for listening.