Java Edition 1.9.1

This page covers a release version that has a critical issue under certain conditions.
 
The dedicated server for this version includes a security vulnerability in the Log4j library that could be used to perform a remote code execution exploit. It can be addressed by appending a certain JVM argument to the server startup command line.[1]
Minecraft 1.9.1
Banner 1.9.1.png: Infobox image for Minecraft 1.9.1 the version in Minecraft
Java Edition 1.9.1.png: Infobox image for Minecraft 1.9.1 the version in Minecraft
Edition

Java Edition

Release date

March 30, 2016

Development versions
Pre-releases (3)
(View all)
Downloads

Client (.json)
Server

Protocol version

108

Data version

175

Resource pack format

2

Minimum Java version

Java SE 6

◄◄  1.9 1.9.1 1.10 ►►

1.9.2 ► 

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Other editions with a version "1.9.1":
 

1.9.1[2] is a minor update for Java Edition released on March 30, 2016.[3] 1.9.1 is not compatible with 1.9 servers. Due to a major multiplayer bug, 1.9.1 was replaced with 1.9.2 on the same day.

Additions

Items

Armor

  • New armor attribute: generic.armorToughness, which includes a new formula for calculating damage:
    totalDamage=damage×(1−max(defensePoints5,defensePoints−damage2+toughness4)25)
    • Increased toughness means less armor defense point reduction from strong attacks.
    • Diamond armor has toughness 2, all other armor has toughness 0. A full set of diamond armor, therefore gives a toughness attribute of 8.

Elytra

  • Added sound effects while gliding with elytra.
    • Sound event item.elytra.flying.

Changes

Blocks

Dispensers

  • Dispensers with arrows in jungle temples now use loot tables.
  • Increased limit per tick for scheduled tile ticks from 1,000 to 65,536.

Hoppers

  • Can now push and pull items to and from chests that are blocked from opening.

Items

Shields

  • No longer take damage when blocking weak attacks (less than 3HP♥♥ damage).

Mobs

General

  • AI has been improved.​

Skeletons

  • Now shoot less quickly on Easy and Normal difficulties.

Non-mob entities

Minecarts with chest & minecarts with hopper

  • The GUI name is now the same as the item's display name.

Command format

Target selectors

  • Entity selector c (count) now sorts on proximity using true coordinates, not coordinates snapped to the grid.[4]

Gameplay

Combat

  • Attack cooldown indicator is now enabled by default.[note 1]

General

Loot tables

Session IDs

  • Are no longer printed by the game to the log files or to the launcher.[5]

Fixes

13 issues fixed

From release versions older than 1.9

  • MC-7961 – Hopper can't fill or empty a chest if the chest is blocked from opening.
  • MC-56162 – Setting /worldborder damage amount 0 doesn't work.
  • MC-95352 – Spatial target arguments c, dx, dy, dz behave unexpectedly and inconsistently.

From release version 1.9

  • MC-90257 – A chain of command blocks may take more than 1 tick to traverse.
  • MC-93074 – Summoned arrows can't be assigned a scoreboard value (too many arrows/spectral arrows cause command fail).
  • MC-96219 – Block duplication bug with pistons (ghost blocks).
  • MC-96927 – Selector c= targeting inaccurate entity position.
  • MC-98327 – Elytra texture transparency issues.
  • MC-98461 – Several languages (at least Frisian, Talossan, Ripuarian, Lojban, and LOLCAT) are not selectable, "Eesti (Eesti)" is listed as "Inglise (US)".
  • MC-98587 – Command block logic sometimes fails arbitrarily.
  • MC-99060 – Elytra glowing effect is always black.
  • MC-99697 – Missnamed minecarts with hoppers and chests as "container.minecart".

From the 1.9.1 development versions

  • MC-99396 – Players attack animation missing.

Other fixes

  • Fixed game engine adding non-existent entities (failed mob spawns, etc.) to its internal lists, increasing instability.[6]

Video

Video made by slicedlime:

Footnotes

  1. ↑ Players who already played previous 1.9 versions may still need to manually enable the crosshair option (or delete options.txt to reset the default values).

References

  1. ↑ "Important Message: Security vulnerability in Java Edition" – Minecraft.net, December 10, 2021.
  2. ↑ "Elytras have sounds? Well, in 1.9.1 pre-release 1 they do. Read about that (and more) at http://www.mojang.com/2016/03/minecr…" – @SeargeDP (Michael Stoyke) on X (formerly Twitter), March 9, 2016
  3. ↑ "Minecraft 1.9.1" (Archive) by Searge – Mojang.com, March 30, 2016.
  4. ↑ MC-96927 – Selector c= targeting inaccurate entity position
  5. ↑ MCL-4420 – Session ID is shown as "<censored>" in launcher but correctly written into log file
  6. ↑ "Paper patch 0078" – https://github.com/starlis/Paper/blob/b2dd99e74e91fbe5f7c28fe29faa58b7162c1aa6/Spigot-Server-Patches/0078-Optimize-Navigation-Listener.patch

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