diff --git a/addons/base_automation/tests/test_mail_composer.py b/addons/base_automation/tests/test_mail_composer.py
index 6eb76496dc9..df70df91321 100644
--- a/addons/base_automation/tests/test_mail_composer.py
+++ b/addons/base_automation/tests/test_mail_composer.py
@@ -34,10 +34,11 @@ class TestMailFullComposer(MailCommon, HttpCase):
             'model_id': self.env.ref('mail.model_mail_compose_message').id,
         })
         automation.write({'action_server_ids': [(4, server_action.id)]})
+        partner = self.env["res.partner"].create({"name": "Jane", "email": "jane@example.com"})
         user = self.env["res.users"].create({"name": "Not A Demo User", "login": "nadu"})
         with self.mock_mail_app():
             self.start_tour(
-                f"/web#id={self.user_employee.partner_id.id}&model=res.partner",
+                f"/web#id={partner.id}&model=res.partner",
                 "mail/static/tests/tours/mail_composer_test_tour.js",
                 login=self.user_employee.login
             )
diff --git a/addons/mail/static/tests/tours/mail_composer_test_tour.js b/addons/mail/static/tests/tours/mail_composer_test_tour.js
index c5e63f7522d..4ac8c42ada6 100644
--- a/addons/mail/static/tests/tours/mail_composer_test_tour.js
+++ b/addons/mail/static/tests/tours/mail_composer_test_tour.js
@@ -1,7 +1,7 @@
 /* @odoo-module */
 
 import { registry } from "@web/core/registry";
-import { createFile, inputFiles } from "@web/../tests/utils";
+import { contains, createFile, inputFiles } from "@web/../tests/utils";
 
 /**
  * This tour depends on data created by python test in charge of launching it.
@@ -12,6 +12,13 @@ import { createFile, inputFiles } from "@web/../tests/utils";
 registry.category("web_tour.tours").add("mail/static/tests/tours/mail_composer_test_tour.js", {
     test: true,
     steps: () => [
+        {
+            content: "Wait for the chatter to be fully loaded",
+            trigger: ".o-mail-Chatter",
+            async run() {
+                await contains(".o-mail-Message", { count: 1 });
+            },
+        },
         {
             content: "Click on Send Message",
             trigger: "button:contains(Send message)",
@@ -65,9 +72,9 @@ registry.category("web_tour.tours").add("mail/static/tests/tours/mail_composer_t
             trigger: '[name="subject"] input',
             run() {
                 const subjectValue = document.querySelector('[name="subject"] input').value;
-                if (subjectValue !== "Ernest Employee") {
+                if (subjectValue !== "Jane") {
                     console.error(
-                        `Full composer should have "Ernest Employee" in subject input (actual: ${subjectValue})`
+                        `Full composer should have "Jane" in subject input (actual: ${subjectValue})`
                     );
                 }
             },
diff --git a/addons/mail/tests/test_mail_composer.py b/addons/mail/tests/test_mail_composer.py
index 6c340dd5a74..f27084334f2 100644
--- a/addons/mail/tests/test_mail_composer.py
+++ b/addons/mail/tests/test_mail_composer.py
@@ -275,10 +275,11 @@ class TestMailComposerUI(MailCommon, HttpCase):
         self.user_employee.write({
             'groups_id': [(4, self.env.ref('base.group_partner_manager').id)],
         })
+        partner = self.env["res.partner"].create({"name": "Jane", "email": "jane@example.com"})
         user = self.env["res.users"].create({"name": "Not A Demo User", "login": "nadu"})
         with self.mock_mail_app():
             self.start_tour(
-                f"/web#id={self.user_employee.partner_id.id}&model=res.partner",
+                f"/web#id={partner.id}&model=res.partner",
                 "mail/static/tests/tours/mail_composer_test_tour.js",
                 login=self.user_employee.login
             )