In Odoo 11 my views are not being found based on (model, type). 

For views 

<record model="ir.ui.view" id="payer_list_view">
  <field name="name">tidb.payer.list</field>
  <field name="model">tidb.payer</field>
  <field name="arch" type="xml">
    <tree>
      <field name="display_name"/>
      <field name="phone"/>
      <field name="email"/>
      <field name="contact_address"/>
    </tree>
  </field>
</record>

and 

<record model="ir.ui.view" id="payer_form">
        <field name="inherit_id" ref="base.view_partner_form"/>
        <field name="name">tidb.payer.form</field>
        <field name="model">tidb.payer</field>
        <field name="groups_id" eval="[(4,ref('group_clinical'))]"/>
        <field name="arch" type="xml">
            <field name="vat" position="replace">
                <field name="customer" invisible="1"/>
                <field name="supplier" invisible="1"/>
                <field name="vat" string="Tax ID"/>
            </field>
        </field>
    </record>

which are the only views defined for that model. 

I can get them to be used if I define my window action as 

<record model="ir.actions.act_window" id="payer_action_window">
      <field name="name">Payers</field>
      <field name="res_model">tidb.payer</field>
      <field name="view_mode">list,form</field>
      <field name="view_ids"
       eval="[(5, 0, 0),
              (0, 0, {'view_mode': 'tree', 'view_id': ref('payer_list_view')}),
              (0, 0, {'view_mode': 'form', 'view_id': ref('payer_form')})]"/>

    </record>

then the views work perfectly. If I omit the "view_ids" field then the views are not resolved by the (model, type) search described in the documentation.  

Can anyone see what I'm doing wrong here? Shouldn't the views be found w/o explicitly specifying them?