diff --git a/addons/im_livechat/__manifest__.py b/addons/im_livechat/__manifest__.py
index 7ce87f64871..c943f55c39b 100644
--- a/addons/im_livechat/__manifest__.py
+++ b/addons/im_livechat/__manifest__.py
@@ -133,6 +133,7 @@ Help your customers with this chat, and analyse their feedback.
             ('remove', 'web/static/tests/mock_server_tests.js'),
             ('remove', 'im_livechat/static/**'),
             'im_livechat/static/tests/helpers/**',
+            ('remove', 'im_livechat/static/tests/helpers/**/web/**'),
             'im_livechat/static/src/embed/**/*',
             ('remove', 'im_livechat/static/src/embed/external/**/*'),
         ],
diff --git a/addons/im_livechat/static/src/core/messaging_service_patch.js b/addons/im_livechat/static/src/core/messaging_service_patch.js
deleted file mode 100644
index 3db3aac949f..00000000000
--- a/addons/im_livechat/static/src/core/messaging_service_patch.js
+++ /dev/null
@@ -1,23 +0,0 @@
-/* @odoo-module */
-
-import { Messaging } from "@mail/core/common/messaging_service";
-
-import { patch } from "@web/core/utils/patch";
-
-patch(Messaging.prototype, "im_livechat", {
-    initMessagingCallback(data) {
-        this._super(data);
-        if (data.current_user_settings?.is_discuss_sidebar_category_livechat_open) {
-            this.store.discuss.livechat.isOpen = true;
-        }
-    },
-    _handleNotificationRecordInsert(notif) {
-        this._super(notif);
-        const { "res.users.settings": settings } = notif.payload;
-        if (settings) {
-            this.store.discuss.livechat.isOpen =
-                settings.is_discuss_sidebar_category_livechat_open ??
-                this.store.discuss.livechat.isOpen;
-        }
-    },
-});
diff --git a/addons/im_livechat/static/src/core/web/livechat_core_web_service.js b/addons/im_livechat/static/src/core/web/livechat_core_web_service.js
new file mode 100644
index 00000000000..6ded0c0c2eb
--- /dev/null
+++ b/addons/im_livechat/static/src/core/web/livechat_core_web_service.js
@@ -0,0 +1,44 @@
+/* @odoo-module */
+
+import { reactive } from "@odoo/owl";
+
+import { registry } from "@web/core/registry";
+
+export class LivechatCoreWeb {
+    constructor(env, services) {
+        Object.assign(this, {
+            busService: services.bus_service,
+        });
+        /** @type {import("@mail/core/common/messaging_service").Messaging} */
+        this.messagingService = services["mail.messaging"];
+        /** @type {import("@mail/core/common/store_service").Store} */
+        this.store = services["mail.store"];
+    }
+
+    setup() {
+        this.messagingService.isReady.then((data) => {
+            if (data.current_user_settings?.is_discuss_sidebar_category_livechat_open) {
+                this.store.discuss.livechat.isOpen = true;
+            }
+            this.busService.subscribe("mail.record/insert", (payload) => {
+                const { "res.users.settings": settings } = payload;
+                if (settings) {
+                    this.store.discuss.livechat.isOpen =
+                        settings.is_discuss_sidebar_category_livechat_open ??
+                        this.store.discuss.livechat.isOpen;
+                }
+            });
+        });
+    }
+}
+
+export const livechatCoreWeb = {
+    dependencies: ["bus_service", "mail.messaging", "mail.store"],
+    start(env, services) {
+        const livechatCoreWeb = reactive(new LivechatCoreWeb(env, services));
+        livechatCoreWeb.setup();
+        return livechatCoreWeb;
+    },
+};
+
+registry.category("services").add("im_livechat.core.web", livechatCoreWeb);
diff --git a/addons/im_livechat/static/tests/helpers/core/web/setup_manager_patch.js b/addons/im_livechat/static/tests/helpers/core/web/setup_manager_patch.js
new file mode 100644
index 00000000000..fa7334a8a88
--- /dev/null
+++ b/addons/im_livechat/static/tests/helpers/core/web/setup_manager_patch.js
@@ -0,0 +1,16 @@
+/* @odoo-module */
+
+import { livechatCoreWeb } from "@im_livechat/core/web/livechat_core_web_service";
+
+import { setupManager } from "@mail/../tests/helpers/webclient_setup";
+
+import { patch } from "@web/core/utils/patch";
+
+patch(setupManager, "im_livechat/core/web", {
+    setupServices(...args) {
+        return {
+            ...this._super(...args),
+            "im_livechat.core.web": livechatCoreWeb,
+        };
+    },
+});