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{{Infobox version
|title=Minecraft 17w49b
|edition=Java
|image=17w49a.png
|image2=Java Edition 17w49b.png
|type=Snapshot
|date=December 7, 2017
|parent=1.13
|clienthash=bb28e11e5b6ca4c0678d00bf82d061d282ab6445
|jsonhash=f8d0a2d9bc6b178c941fb31069196574b4858732
|serverhash=caac50590085014355070ea6381baec0f58aa9f2
|prevparent=1.12.2
|prev=17w49a
|next=17w50a
|nextparent=1.13.1
}}<onlyinclude>

'''17w49b''' is the tenth [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.13]], released on December 7, 2017<ref name=17w49b>{{snap|17w49a|December 6, 2017}}</ref>, which added [[Minecraft:Function (Java Edition)|function]] tags.

== Additions ==
=== General ===
'''[[Minecraft:Tag]]s'''
* Added tags for functions.
** Functions tagged in <code>minecraft:tick</code> runs every tick at the beginning of the tick.
* Added block and item tags for <code>buttons</code>, <code>carpets</code>, <code>doors</code>, <code>logs</code>, <code>saplings</code>, and <code>stone_bricks</code> to the vanilla data pack.
* Added a block tag for <code>flower_pots</code> to the vanilla data pack.
* When overriding a tag, players now append instead of replacing.
* [[Minecraft:Advancement]] item predicates now support item tags.

== Removals ==
=== Command format ===
'''{{cmd|gamerule}}'''
* Removed the <code>gameLoopFunction</code> gamerule in favor of functions tagged in <code>minecraft:tick</code>.

== Fixes ==
{{fixes|fixedin=17w49b|prefix=Minecraft
|;old
|3794|When placing a chest it will glitch to another direction for a second.
|32539|Players can write on both the server name and the server address input field at the same time.
|65983|Mouse cursor moves off-window when accessing inventory (or item contents).
|109799|Observer don't power when update and push by piston at the same time.
|;dev
|122711|Piston leaves their head behind.
|122725|Unable to duplicate banners in crafting table.
|122889|The name of the chiseled sandstone recipe is cut_sandstone, not chiseled_sandstone.
|122931|Frost walker freezes all water, even if there are mobs in the water.
|;previous
|122910|New block/item tags don't work in commands.
|122914|The texture of the lava and water is invisible when there is a block above.
|122916|Team color commands don't work properly.
|122918|Log crafting recipes produce one plank.
|122924|Wrong crafting recipe output for granite and andesite.
|122925|Opening spectator menu crashes the client.
|122935|Hang on 'waiting for chunk' and/or fatal background exceptions when teleporting to new chunks in a busy gameloop.
|122964|Game crashes when pistons push concrete powder next to water.
|123044|The recipe for cobblestone stairs is named "stone_stairs.json" instead of "cobblestone_stairs.json".
|;Private issues
|21073|Private issue.
|59509|Private issue.
|100579|Pistons do not account for block updates triggered by blocks broken by the extending piston when placing moved blocks, resulting in duplication issues.<ref name=17w49b/>
}}</onlyinclude>

== Videos ==
{{slicedlime|RcH4jRYWGXU}}

== References ==
{{reflist}}

== Navigation ==
{{Navbox Java Edition versions|1.1x}}

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Minecraft:Java Edition 17w49b - Revision history

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