Wrong link redirection for multi-domain forums

Hello, I have used the Custom Header Links component, and it is very user-friendly and has been of great help to us. However, I encountered an issue with my bilingual website. The English version is ending with “.com,” while the Chinese version is ending with “.com.cn.” When I click to navigate to the Chinese version with the “.com.cn” ending, it automatically removes the “.cn” and redirects to the English version. Can you please explain the reason behind this behavior?