diff --git a/addons/sale/models/sale.py b/addons/sale/models/sale.py
index df14f2a3f3f..3a185418000 100644
--- a/addons/sale/models/sale.py
+++ b/addons/sale/models/sale.py
@@ -844,7 +844,13 @@ Reason(s) of this behavior could be:
         for order in self.filtered(lambda order: order.partner_id not in order.message_partner_ids):
             order.message_subscribe([order.partner_id.id])
         self.write(self._prepare_confirmation_values())
-        self._action_confirm()
+
+        # Context key 'default_name' is sometimes propagated up to here.
+        # We don't need it and it creates issues in the creation of linked records.
+        context = self._context.copy()
+        context.pop('default_name', None)
+
+        self.with_context(context)._action_confirm()
         if self.env.user.has_group('sale.group_auto_done_setting'):
             self.action_done()
         return True