So I started a new survival world and I got a really good seed with a big plains biome at spawn.

I set up a wheat farm and a house then went AFK for like 40 mins so my wheat could grow then I went back on and everything was fine. I played for a bit then logged off. but when I logged back on pixels were missing from the loading square. I knew that those missing pixels meant chunk corruption. I got on and a small area around my house wasn't corrupted but I looked at the area and a lot of chunks were corrupted. I went into spectator mode because I knew i was gonna delete this world anyway. i looked around a bit and i just saw a lot of chunk corruption. i re-logged and then there were a lot of chunks not loaded in.