I am developing a custom PDF report in Odoo v18 using the report builder and modifying the code as needed. My client requires that the report be automatically saved to the record after generation. In Odoo 17, this was achieved using the attachment_use checkbox, which worked perfectly.

However, in Odoo 18, this functionality no longer works as expected when implementing the final PDF report.

Does anyone have insights or solutions for this? Any help would be greatly appreciated!