Sinceb5a12b4aacthe website_id was not set anymore. Indeed, before this commit website_id was the field from the inherits, thus when writing on website_id from res.user, we would write on the partner field. But withb5a12b4aacthe website_id was explicitely overrided on res.users as a related to res.partner (its inherits) with readonly=True. Thus, writting website_id on res.users was not working anymore. closes odoo/odoo#33521 Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>