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Area

login/ui

Describe the bug

When both Chinese Traditional and Chinese Simplified are enabled, the locale selector on the login page displays both options as "Chinese (Simplified) (中文 (简体))", as shown in the image.

<img width="1902" height="1266" alt="Image" src="https://github.com/user-attachments/assets/94c87c50-0b70-4dd1-88b3-70f654722a33" />

Version

nightly

Regression

[ ] The issue is a regression

Expected behavior

The locale selector should display two distinct options:

• Chinese (Traditional) (中文 (繁體))
• Chinese (Simplified) (中文 (简体))

Actual behavior

Both options are displayed as "Chinese (Simplified) (中文 (简体))" in the locale selector.

How to Reproduce?

1. Go to Realm Settings → Localization tab.
2. Enable Internationalization.
3. In Supported Locales, enable both Chinese (Traditional) and Chinese (Simplified).
4. Open the login page and check the locale selector.

Anything else?

Might caused by LocaleBean: https://github.com/keycloak/keycloak/blob/73a4020baad67f6d0c676548cce47216dc0270a6/services/src/main/java/org/keycloak/theme/beans/LocaleBean.java#L42-L58

Related PR: #41267