When a form view is opened, the first call to `onchange` should always compute fields, even if their dependencies have no default value. Make sure it is the case for main records, and for records inside one2many fields. The latter case was actually not working as expected. closes odoo/odoo#63646 X-original-commit: 45422d56bce413b8577f1784e10dd22ede93c751 Signed-off-by: Raphael Collet (rco) <rco@openerp.com>