diff --git a/addons/website/__manifest__.py b/addons/website/__manifest__.py
index 2288e6296d7..c5cf214e4e2 100644
--- a/addons/website/__manifest__.py
+++ b/addons/website/__manifest__.py
@@ -180,7 +180,6 @@
             'website/static/src/components/website_loader/website_loader.js',
             'website/static/src/components/website_loader/website_loader.scss',
             'website/static/src/components/views/*',
-            'website/static/src/services/chat_window_service_patch.js',
             'website/static/src/services/website_service.js',
             'website/static/src/js/utils.js',
             'website/static/src/xml/website.xml',
diff --git a/addons/website/static/src/client_actions/website_preview/website_preview.js b/addons/website/static/src/client_actions/website_preview/website_preview.js
index dc0480db641..1df57d8afb7 100644
--- a/addons/website/static/src/client_actions/website_preview/website_preview.js
+++ b/addons/website/static/src/client_actions/website_preview/website_preview.js
@@ -125,7 +125,6 @@ export class WebsitePreview extends Component {
             // OdooFrameContentLoaded event to unblock the iframe, as it is
             // triggered faster than the load event.
             this.iframe.el.addEventListener('OdooFrameContentLoaded', () => this.websiteService.unblockPreview('load-iframe'), { once: true });
-            this.websiteService.context.isPreviewOpen = true;
         });
 
         onWillUnmount(() => {
@@ -135,7 +134,6 @@ export class WebsitePreview extends Component {
             this.websiteService.currentWebsiteId = null;
             this.websiteService.websiteRootInstance = undefined;
             this.websiteService.pageDocument = null;
-            this.websiteService.context.isPreviewOpen = false;
         });
 
         /**
diff --git a/addons/website/static/src/services/chat_window_service_patch.js b/addons/website/static/src/services/chat_window_service_patch.js
deleted file mode 100644
index 1925108d726..00000000000
--- a/addons/website/static/src/services/chat_window_service_patch.js
+++ /dev/null
@@ -1,11 +0,0 @@
-/* @odoo-module */
-
-import { ChatWindowService } from "@mail/core/common/chat_window_service";
-
-import { patch } from "@web/core/utils/patch";
-
-patch(ChatWindowService.prototype, {
-    get visible() {
-        return this.env.services.website?.context.isPreviewOpen ? [] : super.visible;
-    },
-});
diff --git a/addons/website/static/src/services/website_service.js b/addons/website/static/src/services/website_service.js
index c4a25c9ae6b..a2ff6ed7673 100644
--- a/addons/website/static/src/services/website_service.js
+++ b/addons/website/static/src/services/website_service.js
@@ -50,7 +50,6 @@ export const websiteService = {
             showAceEditor: false,
             edition: false,
             isPublicRootReady: false,
-            isPreviewOpen: false,
             snippetsLoaded: false,
             isMobile: false,
         });
diff --git a/addons/website/static/tests/tours/hide_chat_window_on_preview.js b/addons/website/static/tests/tours/hide_chat_window_on_preview.js
deleted file mode 100644
index e9e765df4fd..00000000000
--- a/addons/website/static/tests/tours/hide_chat_window_on_preview.js
+++ /dev/null
@@ -1,25 +0,0 @@
-/* @odoo-module */
-
-import { registry } from "@web/core/registry";
-
-import wTourUtils from "@website/js/tours/tour_utils";
-
-registry.category("web_tour.tours").add("test_hide_chat_window_on_preview", {
-    test: true,
-    steps: () => [
-        {
-            trigger: ".o-mail-ChatWindow",
-            run() {
-                window.location.href = wTourUtils.getClientActionUrl("/");
-            },
-        },
-        {
-            trigger: ".o_website_preview",
-            run() {
-                if (document.querySelector(".o-mail-ChatWindow")) {
-                    throw new Error("Chat window should not be visible");
-                }
-            },
-        },
-    ],
-});
diff --git a/addons/website/tests/test_ui.py b/addons/website/tests/test_ui.py
index 33be21a7194..30bb3b96ef0 100644
--- a/addons/website/tests/test_ui.py
+++ b/addons/website/tests/test_ui.py
@@ -423,16 +423,6 @@ class TestUi(odoo.tests.HttpCase):
     def test_27_website_clicks(self):
         self.start_tour('/web', 'website_click_tour', login='admin')
 
-    def test_28_hide_chat_window_on_preview(self):
-        session = self.authenticate('admin', 'admin')
-        partner_id = self.env['res.users'].search([('id', '=', session.uid)]).partner_id
-        self.env['discuss.channel'].create({
-            'name': 'Test Channel',
-            'channel_type': 'chat',
-            'channel_member_ids': [odoo.Command.create({'partner_id': partner_id.id, 'is_minimized': True})],
-        })
-        self.start_tour(f'/web#id={partner_id.id}&model=res.partner&view_type=form', 'test_hide_chat_window_on_preview', login='admin')
-
     def test_29_website_text_edition(self):
         self.start_tour('/@/', 'website_text_edition', login='admin')