Additional platforms appear in the newly created save, along with inverted caves and random lava pools. The map is straight from the curse forge app. I have several modifications installed but error also occurs in vanilla minecraft. Game version: 1.18.2

Edit: Same situation happens on every other island size and during selecting island.

this is not a bug
I was seeing if everything works. update the map in the latest version which is JE-1.18-Skyblock Classic Edition: PRE-RELEASE 3_2

instead caves and other stuff is a known bug