Support Non-English characters

[DolbonIn]

Description

Non-English (non-Latin) characters are not supported in the input field and are also not rendered properly in the interface. When trying to type in languages such as Korean, the characters either do not appear at all or result in broken or invisible glyphs.

This severely limits usability for users who rely on non-English languages for communication.

Problems Observed

• ❌ Typing non-English characters (e.g., Korean, Chinese) does not work — nothing appears in the input field.
• ❌ Non-English characters in the UI are displayed as blank boxes or garbled symbols (see screenshot below).

Steps to Reproduce

1. Use a Linux system with the locale set to a non-English language (e.g., Korean).
2. Attempt to type non-English characters in the input box.
3. Observe that typing fails — characters are not shown or entered.
4. Look at the UI elements and see broken character rendering.

Expected Behavior

• Input fields should allow typing of any Unicode-supported characters.
• The UI should render non-English characters properly using appropriate fallback or system fonts.

Environment

• OS: Linux
• Language/Locale: Korean (ko-KR)

Additional Notes

Please ensure proper internationalization (i18n) and font fallback support across all OS environments, particularly Linux.

[DolbonIn]

#42