Okay so here is the deal. After two world saves, the next time I come online, the whole world in wonkey. The chunks get moved around, creating a very inorganic landscape, all advancements disappear, all chests and beds are gone except for hitboxes, all my stuff is gone and everything inside chests is also gone. This has happened to two worlds. The first time I thought it was a glitch but this is recurring. I don't know if this happens on 1.15.1 but it sure happens on 1.15. Also this might not happen on single player as I was playing with my brother on LAN. This is frustrating. Hours of work is just gone. I don't know why this happens and the mere fact of it happening surprises me since this was supposed to be a bug fixing update. This has to bee fixed. I have many screenshots and can even send the world saves. Please fix this. This annoys me so much. Please Mojang, take notice. You promised a bug fixing update and did not deliver. I am thoroughly disappointed. I hope to never see this happen again.

Regards

Ibrahim Vardag