The language section is missing in the right bar of the editor when trying to duplicate pages of the Primary Language, it might be due to a corrupt entry in the usermeta database table.
Solution:
We recommend you try the following steps after taking a full site backup (mandatory):
1) Log in to your database using a tool like phpMyAdmin. 2) Run the following SQL query:
DELETE FROM wp_usermeta WHERE `wp_usermeta`.`umeta_id` = 84
3) After running the query, log in to the site and verify whether the bug still exists.
Please note that this solution might be irrelevant if it's outdated or not applicable to your case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the issue persists, please open a new support ticket at WPML support forum for further assistance.
