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Bug
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Resolution: Unresolved
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P2: Important
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None
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6.9.1
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Windows
When Universal style or FluentWinUI3 style is applied, the Qt Quick application uses Segoe UI Variable instead of the application's default font, whereas other Qt Quick Controls styles (Basic, Fusion, Imagine, Material, Windows) and Qt Widget application use the default font.
This behavior can be reproduced by running the attached example app with Qt 6.9.1, on Windows 11.
Such behavior may lead to UI design issues, especially when dealing with non‑Latin languages other than English, European languages, Greek, or Russian.
Microsoft also highlights this and recommends using alternative fonts tailored for non-Latin languages. For example:
Segoe UI Variable is our font for English, European languages, Greek, and Russian. For other languages, see the following recommendations.
| Font-family | Styles | Notes |
|---|---|---|
| Ebrima | Regular, Bold | User-interface font for African scripts (ADLaM, Ethiopic, N'Ko, Osmanya, Tifinagh, Vai). |
| Gadugi | Regular, Bold | User-interface font for North American scripts (Canadian Syllabics, Cherokee, Osage). |
| Leelawadee UI | Regular, Semilight, Bold | User-interface font for Southeast Asian scripts (Buginese, Khmer, Lao, Thai). |
| Malgun Gothic | Regular | User-interface font for Korean. |
| Microsoft JhengHei UI | Regular, Bold, Light | User-interface font for Traditional Chinese. |
| Microsoft YaHei UI | Regular, Bold, Light | User-interface font for Simplified Chinese. |
| Myanmar Text | Regular | Fallback font for Myanmar script. |
| Nirmala UI | Regular, Semilight, Bold | User-interface font for South Asian scripts (Bangla, Chakma, Devanagari, Gujarati, Gurmukhi, Kannada, Malayalam, Meetei Mayek, Odia, Ol Chiki, Sinhala, Sora Sompeng, Tamil, Telugu). |
| Segoe UI | Regular, Italic, Light Italic, Black Italic, Bold, Bold Italic, Light, Semilight, Semibold, Black | User-interface font for Arabic, Armenian, Georgian, and Hebrew. |
| SimSun | Regular | A legacy Chinese UI font. |
| Yu Gothic UI | Light, Semilight, Regular, Semibold, Bold | User-interface font for Japanese. |
Typography in Windows
https://learn.microsoft.com/en-in/windows/apps/design/signature-experiences/typography#languages
