diff --git a/addons/mail/static/src/web/chatter.js b/addons/mail/static/src/web/chatter.js
index 72c98aa0e64..e644f1f8398 100644
--- a/addons/mail/static/src/web/chatter.js
+++ b/addons/mail/static/src/web/chatter.js
@@ -337,7 +337,7 @@ export class Chatter extends Component {
     async scheduleActivity() {
         const schedule = async (threadId) => {
             await this.activityService.schedule(this.props.threadModel, threadId);
-            this.load(this.props.threadId, ["activities"]);
+            this.load(this.props.threadId, ["activities", "messages"]);
         };
         if (this.props.threadId) {
             schedule(this.props.threadId);
diff --git a/addons/mail/static/tests/tours/mail_chatter_activity_test_tour.js b/addons/mail/static/tests/tours/mail_chatter_activity_test_tour.js
new file mode 100644
index 00000000000..c9d5c1da4ef
--- /dev/null
+++ b/addons/mail/static/tests/tours/mail_chatter_activity_test_tour.js
@@ -0,0 +1,36 @@
+/* @odoo-module */
+
+import { registry } from "@web/core/registry";
+
+
+registry.category("web_tour.tours").add("mail_activity_schedule_from_chatter", {
+    test: true,
+    steps: [
+        {
+            trigger: "button:contains('Activities')",
+        },
+        {
+            trigger: "div[name='summary'] input",
+            run: "text Play Mario Party",
+        },
+        {
+            trigger: "button:contains('Schedule')",
+        },
+        {
+            trigger: ".o-mail-Activity:contains('Play Mario Party')",
+        },
+        {
+            trigger: "button:contains('Activities')",
+        },
+        {
+            trigger: "div[name='summary'] input",
+            run: "text Play Mario Kart",
+        },
+        {
+            trigger: "button:contains('Mark as Done')",
+        },
+        {
+            trigger: ".o-mail-Message:contains('Play Mario Kart')",
+        },
+    ],
+});
diff --git a/addons/mail/tests/__init__.py b/addons/mail/tests/__init__.py
index f1637f76d83..3ede98f5b52 100644
--- a/addons/mail/tests/__init__.py
+++ b/addons/mail/tests/__init__.py
@@ -2,6 +2,7 @@
 
 from . import test_get_model_definitions
 from . import test_link_preview
+from . import test_mail_chatter_reload
 from . import test_mail_composer
 from . import test_mail_full_composer
 from . import test_mail_render
diff --git a/addons/mail/tests/test_mail_chatter_reload.py b/addons/mail/tests/test_mail_chatter_reload.py
new file mode 100644
index 00000000000..c6f27c756ae
--- /dev/null
+++ b/addons/mail/tests/test_mail_chatter_reload.py
@@ -0,0 +1,20 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo.tests.common import tagged, HttpCase
+
+
+@tagged("-at_install", "post_install")
+class TestMailChatterReload(HttpCase):
+
+    def test_chatter_activity_tour(self):
+        testuser = self.env['res.users'].create({
+            'email': 'testuser@testuser.com',
+            'name': 'Test User',
+            'login': 'testuser',
+            'password': 'testuser',
+        })
+        self.start_tour(
+            f"/web#id={testuser.partner_id.id}&model=res.partner",
+            "mail_activity_schedule_from_chatter",
+            login="admin",
+        )