Thks! Unfortunatly, I'm on the SaaS version...
I don't have access to the XML files

J

Odoo uses the sequence of selection values in the state field to define the default column order in the Kanban view.

The Kanban grouping is based on this underlying state field (a selection field defined in Python).

Since the order of selection values is defined in the Odoo sale.order model code, simply renaming or translating the states does not affect the column order.

<record id="view_order_kanban_inherit" model="ir.ui.view">

    <field name="name">sale.order.kanban.inherit</field>

    <field name="model">sale.order</field>

    <field name="inherit_id" ref="sale.view_quotation_tree_with_onboarding"/>

    <field name="arch" type="xml">

        <!-- Override grouping order by setting sequence -->

        <xpath expr="//kanban" position="attributes">

            <attribute name="default_group_by">state</attribute>

            <attribute name="groups_order">draft,sent,sale</attribute>

        </xpath>

    </field>

</record>