Scott Ackman

Also having this issue on 1.18.  Playing on Nintendo Switch.  My world is approx. 380mb as it is a world I have been working on for some time now.  Game is almost unplayable in this world.  When mining, the blocks break and then reappear.  Rendering is very slow.  Lag is very bad.  Started a new world and everything seems to work just fine.  Is my old world getting too big or is it a known issue with certain worlds that were updated to 1.18?

I also reported this issue happening in my world yesterday.  It was very weird as some mobs despawned, but not all.  For instance, all my chickens in a chicken farm disappeared, but cows and sheep just a few blocks away in another farm were just fine.  I had (3) boats at a dock and (2) of the (3) vanished.  The most frustrating were the (2) villagers that I had in my building for trading that I had just finished prepping for cheap trades.  That takes a lot of work to replicate.  As the OP stated - these are the type of glitches that make people want to drop the game.  Loss of progress and hours of work vanishing into thin air.