When the alias had been set, if the user wanted to disable it he had to erase the email first. Otherwise unchecking the check box didn't work. Task-2299286 closes odoo/odoo#58634 X-original-commit: 45cd13e14fef0bab6921a1fff79335df9015cbf0 Related: odoo/enterprise#13613 Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>