Nautiluses and zombie nautiluses never despawn

Weather changes in the overworld affect the fog in the nether

Dialog body content is misaligned

Block Entity Data desynchronizes after subsequent setblock commands

Arrows shot at walls when facing south sometimes end up vertical instead of horizontal

Lodestone compass stops being a lodestone compass after breaking its tracked lodestone

The built-in update_1_21 pack contains duplicate files from the vanilla pack

All recipes look unlocked after searching until reload

trade_rebalance tags are not in the trade_rebalance pack

Ender Pearl vanishes client side when enderPearlsVanishOnDeath is false

The report generator crashes when trying to generate biome parameters

Unused structures in ancient cities

entrance_path_5 can never generate

Flashing particles when boosting upwards with firework rockets

Native crash when clicking refresh in the server list

Custom player heads sometimes flash when placed on armor stands

Lily pad placement in creative mode causes item on hotbar to flicker/vanish

Single-ingredient recipes cannot be stacked by repeatedly clicking on the recipe

Parts of the world fail to render in specific locations related to chunk borders

Structure blocks save invalid data when saving a structure at 0, 0

Command blocks fail to output redstone signal when powered by a powered block