我的世界Minecraft Java版17w49b发布。每周快照是Minecraft的测试机制，主要用于下一个正式版的特性预览。然而，每周快照主要用于新特性展示，通常存在大量漏洞。因此对于普通玩家建议仅做测试尝鲜用。使用测试版打开存档前请务必备份。适用于正式版的Mod不兼容快照，且大多数Mod都不对每周快照提供支持。Minecraft 1.13 仍未发布，17w49b为其第10个预览版。
Minecraft 快照 17w49b
Java版 1.13 的快照
17w49b的更改
Added tags for functions
为函数加入了标签(tag)
Removed the "game loop" gamerule, now anything tagged in minecraft:tick will run every tick
移除了“game loop”游戏规则(gameLoopFunction)，现在所有贴有minecraft:tick的都会在每一刻执行。
Ticking functions now run before the world, not after
每刻执行的函数在运行顺序上现在先于世界
When overriding a tag, you now append instead of replacing
从一个不同的数据包重写标签时，现在的效果是附加而不是替换
修复的漏洞
Fixed bugMC-100579- Pistons do not account for block updates triggered by blocks broken by the extending piston when placing moved blocks, resulting in duplication issues
在放置被移动的方块时，延展活塞而破坏方块导致的方块更新不会影响活塞，导致复制问题
Fixed bugMC-122196- Language options are blank
语言列表为空
Fixed bugMC-122711- Piston leave their head behind
破坏活塞会留存活塞头
Fixed bugMC-122725- Unable to duplicate banners in crafting table
在工作台无法复制旗帜
Fixed bugMC-122889- The name of the chiseled sandstone recipe is cut_sandstone, not chiseled_sandstone
錾制砂岩的配方名称为cut_sandstone(切制砂岩)，而不是chiseled_sandstone(錾制砂岩)
Fixed bugMC-122910- New block/item tags don't work in commands
新的方块、物品标签在命令中不起作用
Fixed bugMC-122914- The texture of the lava and water is invisible when there is a block above
当上方有一个方块时，岩浆和水的材质不可见
Fixed bugMC-122916- team color commands don't work properly
队伍颜色未正常工作
Fixed bugMC-122918- Log crafting recipes produce one plank
原木的合成配方产出一个木板
Fixed bugMC-122924- Wrong crafting recipe output for granite and andesite
花岗岩和安山岩的合成配方有误
Fixed bugMC-122925- Opening spectator menu crashes the client
打开旁观者菜单导致客户端崩溃
Fixed bugMC-122931- Frost walker freezes all water, even if there are mobs in the water
冰霜行者冻结所有的水，即使有生物在水里面
Fixed bugMC-122935- hang on 'waiting for chunk' and/or fatal background exceptions when teleporting to new chunks in a busy gameloop
在一个繁忙的游戏循环中传送到新区块时留置在“等待区块”状态并/或在内部显示致命错误提示
安装快照
Please report any and all bugs you find in Minecraft to bugs.mojang.com. If nobody reports a bug, we can’t fix it! experimental development snapshots” and save. To switch to the normal version, you can select it in the dropdown at the bottom left corner of the launcher. Back up your world first or run the game on in a different folder (See the “new profile” dialog). Snapshots can corrupt your world, please backup and/or run them in a different folder from your main worlds.请在//bugs.mojang.com报告Minecraft中的BUG。如果没人汇报BUG的话，我们无法修复它!如果你想试玩快照，请打开官 方启动器并点击“New Profile”按钮，选中“snapshots”并选择“Enable experimental development snapshots”并点击保存。如果想切换到普通的版本，你可以在启动器左下角按钮上方的下拉菜单中选择。在开始快照前备份你的世界或在不同的文件夹中启动快照(见“new profile”对话框)。快照可能会玩坏你的存档，请千万记得备份存档和/或在与你的存档不同文件夹里运行。