Ice caves can generate on the surface

Biomes can be inlined in biome sources and flat world presets

At extreme weirdness/ridges values, the game can generate deep lakes / "sinkholes"

Overworld and menu background music is skewed towards the newest 26.2 tracks

Sulfur caves can generate on the surface

Lodestone compasses still work after lodestone is broken if in bundle

Explorer maps sometimes show incorrect colors

Taigas can generate in snowy/frozen regions, looking out of place

Dimension padding doesn't affect the start piece

Slots player.cursor and horse.chest are interchangeable

Trial Chambers can generate without an entrance room

Blocks placed with the simple_block feature type aren't consistently waterlogged

Endermen are not in the #deflects_arrows or #deflects_tridents tags

Some advancements for 1.21 block recipes are in the regular datapack

Grove biome is not in the #is_mountain biome tag

Geode features ignore the invalid_blocks field

Underground seagrass feature files exist despite never generating

Underground seagrass no longer generates in 1.18+

Redundant block_predicate_filter check in mangrove tree placement

Overriding the default world type doesn't work until all presets are cycled through

Podzol from Old Growth Pine/Spruce trees can generate underwater

Steep surface rule condition only works on the north and east faces of slopes

Oak Boat and Oak Boak With Chest are out of order in the search

Structure blocks are not included with the other Operator-only items in the creative inventory

Modifying a world preset to not include overworld settings will not give a datapack error, but selecting the world type will instantly crash your game