When using a Chinese input method, you cannot sneak while jumping, nor can you sneak while flying in Creative mode. After turning off the Chinese input method, everything returns to normal.
在中文输入法下，无法在潜行时跳跃，也不能再创造模式飞行时潜行。关闭中文输入法后恢复正常。
Environment
Windows 10
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Comments 3
With Microsoft Pinyin IME, you can sneak while jumping, but with other input methods (I use Sogou Pinyin IME) it doesn't work. In Bedrock Edition or other games, you can sneak while jumping with Sogou Pinyin IME.
在微软拼音输入法下可以在潜行时跳跃，但是在其他输入法（我是用的是搜狗拼音输入法）下不行。在基岩版或其它游戏中可以在搜狗拼音输入法下潜行时跳跃。
使用微软拼音输入法以及在微软商店安装并使用QQ拼音输入法、百度输入法、微信输入法的时候，不会出现问题。但是使用搜狗拼音输入法就会出现这个页面所描述的问题。
No issues occur when using Microsoft Pinyin, or when installing and using QQ Pinyin, Baidu Pinyin, or WeChat Pinyin from the Microsoft Store. However, the problem described on this page appears when using Sogou Pinyin Input Method.
@qwerty
Can’t reproduce, unless I turn below option on. Do you have it enabled?