Minecraft wiki entry for Development_versions, associated text: MC-171079 – Comparators no longer work as expected reading containers through powered blocks.
MC-171213 – Blocks that are affected by gravity do not destroy Nether sprouts when dropped from above.
MC-171589 – Fire makes block burned noise before the block disappears.
MC-171756 – Weird fire bug.
MC-171860 – Nether fossils have code implying an unimplemented /locate function.
MC-172266 – Crossbow wielding piglins do not properly walk backwards to target the player when very close.
MC-172323 – Game crashes when summoning a hoglin with the attack damage attribute set to 0 or giving a hoglin Weakness with a very high level (255).
MC-172374 – Can teleport to invalid y coordinates and crash the game.
MC-172428 – Piglins and hoglins do not look at their target.
MC-172470 – When the piglin holds the bow, it will try to attack and follow the enemy eventually stood there not moving.
MC-172530 – Piglins indefinitely stand around dropped golden items if mobGriefing is disabled.
MC-172903 – Piglins which convert into zombified piglins delete armor if equipped.
MC-173050 – Hoglins cannot hit some mobs with large hitboxes.
MC-173156 – Z-fighting at bottom of potted bamboo; bottom texture of bamboo is exposed.
MC-173160 – Weeping vines plants can be replaced by weeping vines "sapling" (small block) by just right-clicking.
MC-173167 – Netherite sword/tools not sorted with other swords/tools.
MC-173180 – Hoglins are not scared of warped fungus in flower pots.
MC-173219 – No sound when climbing weeping vines.
MC-173243 – Crying obsidian is movable by pistons.
MC-173283 – Piglin admiring held gold ingot does not drop it when killed.
MC-173302 – Crying obsidian can be harvested with any pickaxe.
MC-173384 – Crying obsidian can be destroyed by the ender dragon.
MC-173433 – Killing a baby hoglin does not yield experience.
MC-173462 – Baby piglins can hold soul fire torches.
MC-173467 – Piglins admiring bartering gold ingot drop nothing when converting to zombified piglin.
MC-173484 – Death message from falling off a trapdoor does not mention it by name.
MC-173485 – Death message from falling off scaffolding does not mention it by name.
MC-173706 – NullPointerException in server tick loop when trying to load a flatland world with Nether biome.