Before this commit and since commit [1], it was possible to clone a page in the page list view. It shouldn't be the case, cloning a page lead to bad result: a page with the same URL which is not shown in the page list view because pages are filtered by URL to remove duplicates. Cloning a page has always had to be done through the page properties > "clone page" button. Doing it this way will ask the user for a new page name (and so a new url). The page will then correctly be listed. [1]: https://github.com/odoo/odoo/commit/3192051806e0da1276604a31ad818f8768105362 opw-3591738 closes odoo/odoo#146173 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>