Category duplicates when installing languages

Hello, I have a strange issue. Whenever I want to install another language (Spanish in my case) the categories get duplicated like in the image below:



The curious thing is that the duplicates only appear in the actual web page (when publishing the site). The categories inside the administration are fine. Even if I try to uninstall the language, the damage is already done and I can't rollback, I have to start again the site from scratch. What could it be? Please help!

Juan.

Hello Juan,

You should go to the back-end of your site, then go to Extensions -> Plugins to find and enable the "System - Language Filter", then the problem will be resolved.

Hope that this is useful.
Sincerely, Giang