Java Edition 13w09c

13w09c is the thirteenth snapshot for 1.5, and was released to fix some of the bugs and crashes in the 13w09a and 13w09b snapshots.

Gameplay

 * NBT related
 * Added a SeeFriendlyInvisibles NBT tag for players.

Items

 * Potions
 * All potions are now categorized in Creative mode.

Command format

 * Amplifier is no longer capped at 4.
 * You can now remove effects by running.
 * You can now remove effects by running.

Fixes
32 bugs fixed

From released versions before 1.5
 * – TP Bug when you sit in Minecart/boat/riding pig.
 * – Minecart going in a circle will make any minecart close to them go super fast.
 * – Sounds: Fire extinguish sound does not work in survival.
 * – Swords do not lose durability when used on the Ender dragon.
 * – Creative Menu potion values are not the same as when brewed (issue redo).
 * – Nether cave/tunnel generator produces incorrect/cut tunnels.
 * – Hitting mobs with a sharpness I wooden sword and weakness III crashes the game.

From the 1.5 snapshots
 * – Powering noteblock with redstone block or torch does not work when powering it twice.
 * – Brewing stand comparator output inconsistent.
 * – Non-standard resolutions (and small standard resolutions) not detected properly.
 * – Missing quartz, hopper, and comparator textures.
 * – Quartz slabs and double slabs using wrong texture.
 * – lower resolution textures glitch.
 * – Inconsistent distribution system (based on hopper, hopper bug) using rails and minecart-chest over hoppers.
 * – Comparator not updating status after reloading chunks.
 * – piston arm disappears briefly when placed on an active power source.
 * – Crash caused by vertical wiring (half slabs / glowstone / full blocks).
 * – Hoppers stop working on chunk reload.
 * – Minecarts with Hoppers duplicating items when multiple carts are in the same space.
 * – Powering 2 pistons extends the wrong piston.
 * – Mobs with the old AI have inverted head movement.
 * – Rows of Vertical Down Piston Extenders have a >50% failure rate.
 * – Graphical glitches involving pistons.
 * – Minecraft crashes when a saddled pig you ride dies or when changing between rideable entities.
 * – Animations for items and blocks do not work properly.

From the previous snapshot
 * – Unable to craft with blocks which have a damage value greater than 0.
 * – Invisible entities infinite spawn loop (client side) using minecart spawners causing severe performance issues.
 * – Crash when near crops.
 * – View would be upside down if the player had speed 5 and FOV quake pro.
 * – Minecraft has stopped running because it encountered a problem; Ticking player.
 * – Same redstone line, two different redstone level.
 * – Internal error when using /effect with an id >31.