1.12.2 is a minor update for Minecraft (Java Edition) that was released on September 18, 2017.^[1] It is not compatible with 1.12 and 1.12.1 servers. This is the first version of the Java Edition (originally called just Minecraft) to display the new official title, Minecraft: Java Edition.

Changes

Mobs

Parrot

• Can now respawn.

General

Menu screen

• Changed the menu screen logo to have the subtitle "Java Edition ". This subtitle is a separate texture.

Fixes

12 issues fixed

From released versions before 1.12.2

• MC-15152 – Standing in a nether portal and opening a chest will render the chest open until another chest is opened
• MC-79154 – Hoppers occasionally duplicate items (within chunks)
• MC-86850 – Ender Pearling through a nether portal in the over-world tp's you to the portals nether coordinates but in the overworld
• MC-91803 – Cave / ambiance music can play far away from the player and is not audible
• MC-104259 – Player / mob stuck on farmland while it changes to dirt
• MC-118382 – Parrots do not respawn
• MC-118976 – Landing on farmland gets you stuck in flight mode
• MC-120444 – Almost any entity inside farmland gets teleported when it turns into dirt
• MC-120593 – Items stay in crafting grid when entering nether portal
• MC-120611 – Player stuck in grass path when it changes to dirt

From the current version, hotfixed

• MC-121292 – Error: Could not find or load main class net.minecraft.client.main.Main

Private issues

• MC-120567 – Private security issue

Video

Video made by slicedlime:

Trivia

• On April 1, 2018, all textures in 1.12.2 were temporarily replaced – they were changed to include a smaller range of colors, falsely told to be the new textures previously announced (as a joke for April Fools).^[2]
• This is widely considered the most modded version of Minecraft Java to date, with far over 46,000 released mods as of September, 2021. As such, most people who play with mods primarily play on this version.
• This is the last full release to use the panoramic background from Beta 1.8, as all of the subsequent updates had backgrounds related to the theme of the respective update.
• This release holds the record of serving as the latest release of Minecraft: Java Edition for the longest time, at 303 days between its release on September 18, 2017 and the release of Java Edition 1.13 on July 18, 2018.
  • The previous record of serving as the latest release of Minecraft: Java Edition for the longest time was held by 1.11.2 (168 days).
• This is the last version using numeric IDs, as The Flattening was implemented in Java Edition 1.13.
• This version came exactly seven years after Alpha v1.1.1 and Alpha v1.1.2.

Gallery

• 
  The Minceraft easter egg in this version.

References