Hello,
i have a button that opens a tree view.

def action_view_altri_dati_gestionali(self):
    return {
        'name': self.product_id.name,
        'res_model': 'altri.dati.gestionali',
        'type': 'ir.actions.act_window',
        'context': {'invoice_line_id': self.id},
        'domain': [('invoice_line_id', '=', self.id)],
        'view_mode': 'tree',
        # 'target': 'new'
    }

    return action

If the view is opened in a modal window (with 'target': 'new') then the "Actions" drop down menu is NOT shown when selecting records.
If instead the view is opened in the main window (without 'target': 'new') then the "Actions" drop-down menu is shown correctly.

do you have a suggestion?

Thanks