Java Edition 1.17.1

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1.17.1 is a minor update to Java Edition, released on July 6, 2021, which changes some game mechanics and fixes bugs and crashes.^[2] It is not compatible with 1.17 servers. It is the last version to require Java 16.

Death messages

• Two previously untranslated death messages for some underwater mobs have been given messages:
  • <Name> died from dehydration.
  • <Name> died from dehydration whilst trying to escape <Name>.

Languages

• Added Classical Chinese.^{[note 2]}

Enchanting

• All enchantments are now capped at level 255 in both display and power.

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Cauldrons

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

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Spyglass

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

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Axolotl

• Blue axolotls now only spawn through breeding.

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Drowned

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

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Goats

• Breeding common goats now have a 2% chance to produce screaming goats.
• Status effects applied to goats now also apply when the goat is jumping or ramming.

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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, which can cause performance issues with a large group of zombies.

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 uses 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: ✂🍖🪣🔔⏳⚑₠₡₢₣₤₥₦₩₫₭₮₰₱₲₳₵₶₷₸₹₺₻₼₿

Languages

• Removed the following languages due to incomplete translations:
  • East Allgovian German^{[note 3]}
  • Manx
  • Sicilian^{[note 4]}

Logging

• Deaths of named mobs are now logged.

49 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-148635 – Dolphins do not swim with or give "Dolphin's Grace" to creative players.
• 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-202164 – "Times Crafted" statistics & corresponding objectives increase incorrectly when using the stonecutter.
• MC-223350 – Loaded chunks sometimes don't render until the player moves their head slightly.
• MC-224894 – Light tickets are released too early.

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-219290 – Calcite is too quiet compared to other blocks.
• MC-221656 – Creative mode obtained bucket of axolotl/tropical fish only spawns one kind axolotl/tropical fish.
• MC-222731 – Captured axolotl constantly tries to leave water.
• 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-226926 – Emerald ore generates too often.
• 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-228599 – Attempting to walk through flowing water constantly switches the player from swimming into normal mode.
• MC-228802 – Chunks not loading on a server / Cannot invoke cmq.a(int, int, int) because ☃ is null.
• MC-228828 – Specifying the --server parameter when starting the game, causes the game to crash.
• MC-228858 – Axolotls despawning though named and on leashes.
• MC-229169 – Piglins can no longer hear players breaking protected blocks through walls.
• MC-229191 – Diamond ore distribution changed between 1.16.5 and 1.17.
• MC-229246 – Piglins and piglin brutes no longer call other piglins after attacking one of them behind walls.
• MC-229299 – Blue axolotls can spawn naturally.
• MC-229441 – You can steal the item a villager is holding for trade by killing it.
• MC-229614 – Wandering Trader obtained tropical fish are only white kob.
• MC-230716 – death.attack.dryout and death.attack.dryout.player display raw translation strings (are untranslated).

Other

• Duplication exploit with anvils.
• Fixed crashes.
• A private issue was fixed.
• Fixed some critical issues.

• The last time that a major version had only one minor release (i.e., ending at 1.x.1) was with 1.0.1, released almost 10 years prior in 2011.

• 👁 Terrain in this version.
  
  Terrain in this version.