Java Edition 1.9.1/Development versions

This is a list of Java Edition 1.9.1 development versions.

1.9.1-pre1

1.9.1-pre1 is the first pre-release for 1.9.1.^[1]^[2]

Additions

Items

Armor

New armor attribute: generic.armorToughness.
- Damage formula is now $t o t a l D a m a g e = d a m a g e \times (1 - \frac{m a x (\frac{d e f e n s e P o i n t s}{5}, d e f e n s e P o i n t s - \frac{d a m a g e}{2 + \frac{t o u g h n e s s}{4}})}{25})$ , i.e. 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.
New option enableWeakAttacks in options.txt.
- Defaults to false. When false, the client will ignore attempts to attack when weapon cooldown is less than 75% recharged.
- The effect was removed in the final release, however the option itself remains.

Elytra

Added sound effects, while gliding in the Elytra.
- Sound event item.elytra.flying.

Changes

Blocks

Dispensers

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.

Mobs

General

Improved AI.

Command format

Target selectors

Entity selector c (count) now sorts on proximity using true coordinates, not coordinates snapped to the grid.^[3]

Gameplay

Combat

Missing an attack no longer triggers the weapon cooldown (later reverted in final release.)

General

Loot tables

Now also work with dispensers and droppers.
- Dispensers with arrows in jungle temples now use loot tables.

Session IDs

Now no longer printed by the game to the log files or to the launcher.^[4]

Fixes

7 issues fixed

From released versions before Java Edition 1.9.1

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 version 1.9

MC-90257 – A chain of command blocks may takes more than 1 tick to traverse.
MC-96219 – Block duplication bug with pistons (ghost blocks).
MC-96927 – Selector c targeting inaccurate entity position.
MC-98327 – Elytra texture transparency issues.

Other fixes:

Fixed game engine adding non-existent entities (failed mob spawns, etc.) to its internal lists, increasing instability.^[5]

1.9.1-pre2

1.9.1-pre2 is the second pre-release for 1.9.1.^[6]^[7]

Changes

Items

Shields

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

Entities

Minecarts with chests & minecarts with hoppers

The title of the inventory now match the item's name.

Gameplay

Combat

Missing triggers weapon cooldown again if the cooldown was 75% or more recharged (later reverted in final release).

Fixes

5 issues fixed

From release version 1.9

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 – Typos in minecarts with hoppers and chests, reading "container.minecart".

From the previous development version

MC-99395 – Closing fence on mob crashes the game.

Other fixes:

"Fixed crash in pathfinding code (CME)".^[6] (ConcurrentModificationException)

1.9.1-pre3

1.9.1-pre3 is the third and the final pre-release for 1.9.1,^[6] which fixes yet another crash in the pathfinding code.^[8]

Fixes

2 issues fixed

From the 1.9 development versions

MC-93074 – Summoned arrows can't be assigned a scoreboard value (too many arrows/spectral arrows cause command fail).

From the previous development version

MC-99426 – PigZombie ticking entity crash.

Other fixes

"Fixed another crash in pathfinding code (NPE)."^[6] (NullPointerException)

Notes and references

↑ http://web.archive.org/web/0/http://www.mojang.com/2016/03/minecraft-191-pre-release-1/
↑ "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
↑ MC-96927 – Selector c= targeting inaccurate entity position
↑ MCL-4420 - Shown as "<censored>" in launcher but correctly written into log file.
↑ "Paper patch 0078" – https://github.com/starlis/Paper/blob/b2dd99e74e91fbe5f7c28fe29faa58b7162c1aa6/Spigot-Server-Patches/0078-Optimize-Navigation-Listener.patch
↑ ^a ^b ^c ^d http://www.mojang.com/2016/03/minecraft-191-pre-release-1/
↑ "Minecraft 1.9.1 Pre-Release 2 is now uploaded to the launcher. The blog post at http://www.mojang.com/2016/03/minecr … will be updated in a few minutes." – @SeargeDP (Michael Stoyke) on X (formerly Twitter), March 10, 2016
↑ "There was one crash cause in pre2 that we missed, so Minecraft 1.9.1 Pre-Release 3 is now available: mojang.com/2016/03/minecr…" – @SeargeDP (Michael Stoyke) on X (formerly Twitter), March 11, 2016

Navigation

[1] ttp://web.archive.org/web/0/http://www.mojang.com/2016/03/minecraft-191-pre-release-1/

[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] MC-96927 – Selector c= targeting inaccurate entity position

[4] MCL-4420 - Shown as "<censored>" in launcher but correctly written into log file.

[5] "Paper patch 0078" – https://github.com/starlis/Paper/blob/b2dd99e74e91fbe5f7c28fe29faa58b7162c1aa6/Spigot-Server-Patches/0078-Optimize-Navigation-Listener.patch

[blogpost-6] ttp://www.mojang.com/2016/03/minecraft-191-pre-release-1/

[7] "Minecraft 1.9.1 Pre-Release 2 is now uploaded to the launcher. The blog post at http://www.mojang.com/2016/03/minecr … will be updated in a few minutes." – @SeargeDP (Michael Stoyke) on X (formerly Twitter), March 10, 2016

[8] "There was one crash cause in pre2 that we missed, so Minecraft 1.9.1 Pre-Release 3 is now available: mojang.com/2016/03/minecr…" – @SeargeDP (Michael Stoyke) on X (formerly Twitter), March 11, 2016

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