After updating to 1.19, everything below Y=0 disappeared (first picture). I had a backup copy of the world which I made before the Wild Update, but after loading it in, everything below Y=0 was gone again. After exploring, I found that some areas outside of my rendering distance were preserved (the dirt column picture), but nothing else. I wasn't able to obtain an older version to see if the loading the backup would have everything saved. (Windows 10 user)
cheeesiest
After updating to 1.19, everything below Y=0 disappeared (first picture). I had a backup copy of the world which I made before the Wild Update, but after loading it in, everything below Y=0 was gone again. After exploring, I found that some areas outside of my rendering distance were preserved (the dirt column picture), but nothing else. I wasn't able to obtain an older version to see if the loading the backup would have everything saved. (Windows 10 user)