Java Edition 1.17.1 Pre-release 1

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1.17.1 Pre-release 1 (known as 1.17.1-pre1 in the launcher) is the first pre-release for Java Edition 1.17.1, released on June 18, 2021,^[2] which tweaks some game mechanics and fixes bugs.

Cauldrons

• Powder snow now fills cauldrons twice as fast as before.

Spyglass

• Tweaked held model texture to include glass on the backside.

Axolotl

• Blue axolotls now only spawn through breeding.

Drowned

• Increased the drop probability of copper ingot from 5% to 11%, and increased the drop rate boost with each level of the Looting enchantment from 1% to 2%.
  • This change is to match Bedrock Edition's drop rates.

Goats

• Breeding common goats now has a chance to produce screaming goats.
• Status effects applied to goats now also apply when the goat is jumping or ramming.

Zombies, zombie villagers, husks and drowned

• No longer pick up glow ink sacs.
  • This prevents zombies from persisting after picking up the loot of a dead glow squid.

Protocol

• Handshake packet padding method for "hostname" and "port" field has reverted to pre-1.17 when the server address which used is a SRV record.
  • Now, data padded in these field will use the address and port which SRV record pointed at, instead of using "server address" as "hostname" and 25565 as "port".

Fonts

• Some new characters have been added.
  • Includes several currency symbols and some new emoji.
  • The new characters are: ₺✂🍖🪣🔔⏳⚑₠₡₢₣₤₥₦₩₫₭₮₰₱₲₳₵₶₷₸₹₺₻₼₿

30 issues fixed

From released versions before 1.17

• MC-123654 – Sun, moon, and/or clouds are not showing if render distance is below 4.
• MC-131290 – Enchantments are saved as shorts, but are loaded as and function with integer values.
• MC-156155 – Turkish lira sign (₺) appears as □ in the game.
• MC-156977 – When TNT is powered at the moment it's pushed, it creates a ghost block.
• MC-194736 – Duplicate text mapping for U+00B7.
• MC-196999 – U+1FEC is wrong in Minecraft's font.
• MC-223350 – Loaded chunks sometimes don't render until the player moves their head slightly.

From 1.17

• MC-213986 – Pistons and dispensers can be used to create ghost blocks using powder snow.
• MC-219018 – Ghost items can be created using /item (server doesn't update client inventory correctly).
• MC-223368 – Strength and weakness potions / custom attack damage attributes does not change damage from goats.
• MC-225816 – Hanging roots appear large when an item entity.
• MC-226461 – Logs can be replaced with stone near lava pools.
• MC-226505 – Goat's long jump is not affected by the jump boost effect.
• MC-226512 – Goats do not use the damage of held items when ramming entities.
• MC-226948 – Withers are now affected by potion effects.
• MC-227387 – World gen datapacks will likely crash or softlock the game.
• MC-227435 – Lag when placing heads of non-existent players when on servers.
• MC-227483 – root_system feature config's codec uses a wrong field.
• MC-227520 – Overworld Fossils always generate at bedrock level.
• MC-227557 – End portal texture appears stretched after world conversion.
• MC-227618 – Small dripleaf is consumed without being placed when used on tall seagrass.
• MC-227651 – Group for lapis lazuli ore smelting and blasting recipes is misspelled.
• MC-227821 – Client crash when trying to create/edit realm immediately after deleting previous one.
• MC-227891 – Ender pearls despawn when a player logs out of a server.
• MC-228219 – Thrown ender pearls disappear upon entering the exit end portal.
• MC-228343 – java.lang.NullPointerException when random_selector default feature isn't found.
• MC-228430 – Very long loading pause while booting the game ("Failed to add PDH Counter", caused by oshi).
• MC-228828 – Specifying the --server parameter when starting the game, causes the game to crash.
• MC-229299 – Blue axolotls can spawn naturally.

Other

• Duplication exploit with anvils.