The web editor has been migrated to a newer internal API across its controllers, models, and tests. This helps keep website editing functionality reliable and easier to maintain, with no major business workflow changes expected.

task:https://www.odoo.com/web#id=21484&view_type=form&model=project.task&action=327&menu_id=4720
pad:  https://pad.odoo.com/p/r.3389abd14374ebb9f084276fc10cfd81