Windows 11 Why doesn't spellcheck for saved words in %appdata%\Microsoft\Spelling\sv-SE\default.dic work in Windows 11?

[Caixia Zhu]

In Windows 10 and Windows 11, the preferred language is set to Swedish. For our application, we use the following code: TextBox.SpellCheck.CustomDictionaries.Add(new Uri("C:/Users/XXXXXX/AppData/Roaming/Microsoft/Spelling/sv-SE/default.dic")); to add a custom dictionary. Our application saves new words to %appdata%\Microsoft\Spelling\sv-SE\default.dic. In Windows 10, this functionality works as expected: when previously saved words are typed again, they aren't highlighted as incorrect. Additionally, the saved words in default.dic can be viewed in the system settings at: Settings ->

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