[Решено] 404 error after editing a page

Background of the issue:
I have a page on скрытая ссылка that I edited using the WPML editor. I need to make changes related to CSS, not translations. I clicked on 'edit anyway' in the WPML editor.

Symptoms:
After editing, a gear icon appears instead of the translation in the page archive in the admin panel, and the page shows a 404 error.

Questions:
Why does WPML hide, delete, or not show the page after editing with the WPML editor?