以下是我在那边论坛发的内容：
I use the Sogou Pinyin input method to enter a piece of text without adding punctuation at the end. Regardless of whether it is full-width or half-width punctuation or numbers, switching to another note and switching back will cause the previously entered content to disappear.
1.Sogou Pinyin Input Method: Chinese + Full-width Punctuation. No problem.
搜狗拼音输入法：中文+全角标点。没问题
text:中文后面跟着全角标点句号。
2.Sogou Pinyin Input Method: Chinese + Half-width Punctuation. No problem.
搜狗拼音输入法：中文+半角标点。没问题
text:中文后面跟着半角标点句号.
3.Sogou Pinyin Input Method: Chinese + Numbers. No problem.
搜狗拼音输入法：中文+数字。没问题
text:中文后面跟着数字2
4.Windows EN-US Input Method: Entering English, No problem.
windows的EN-US输入法：输入英文，没问题。
text:english mode
5.Sogou Pinyin Input Method: English, entered in Sogou Pinyin's English mode. No problem.
搜狗拼音输入法：英文，以搜狗拼音的英文模式输入。没问题
text:sougou pinyin
6.Sogou Pinyin Input Method: Chinese. Switching to another note and switching back will cause the text to disappear.
搜狗拼音输入法：中文。切换到其他笔记再切换回来，文字会消失（画横线是消失的部分）
text:搜狗拼音打中文后面不加标点符号和数字
7.Sogou Pinyin Input Method: English, entered in Sogou Pinyin's Chinese mode by pressing Enter or Shift. Switching to another note and switching back will cause the text to disappear.
So, it is an incompatibility issue between Joplin and the Sogou Pinyin input method that causes text loss when switching notes. So far, I have only found this issue in Joplin; other software like Word, Evernote, and Notepad.exe does not have this problem.