dont know if this is happening to anyone else but whenever i open my new world i created on the new snapshot stuff isnt there anymore like my chest. Also my bed was gone as well i dont know whats happening.

so i opended my new world on the new snapshot and when i came back everything was weird

1. there were random structures that were not there before so close to my house
2.my bed and chest was gone
3.there was a jungle biome that was far away from my house but is very close now
and overall just acting strange
dont know if this is normal since im somewhat new to java edition but i thought id just say whats going on.
thanks.