diff --git a/addons/mrp_subcontracting/__manifest__.py b/addons/mrp_subcontracting/__manifest__.py
index 7691a0caf89..8088babfd78 100644
--- a/addons/mrp_subcontracting/__manifest__.py
+++ b/addons/mrp_subcontracting/__manifest__.py
@@ -129,8 +129,6 @@
             # Form style should be computed before
             'web/static/src/views/form/button_box/*.scss',
 
-            'web/static/src/legacy/utils.js',
-
             'mrp_subcontracting/static/src/subcontracting_portal/*',
             'web/static/src/start.js',
         ],
diff --git a/addons/point_of_sale/__manifest__.py b/addons/point_of_sale/__manifest__.py
index 901b6fa1896..dce9001d7e6 100644
--- a/addons/point_of_sale/__manifest__.py
+++ b/addons/point_of_sale/__manifest__.py
@@ -157,7 +157,6 @@
             'web/static/src/legacy/js/**/*',
             ('remove', 'web/static/src/legacy/js/libs/**/*'),
             ('remove', 'web/static/src/legacy/js/public/**/*'),
-            'web/static/src/legacy/utils.js',
             'web/static/src/search/**/*',
             'web/static/src/views/fields/field_tooltip.js',
             'web/static/src/views/fields/field.js',
diff --git a/addons/project/__manifest__.py b/addons/project/__manifest__.py
index 2420bd4926b..241f69174c0 100644
--- a/addons/project/__manifest__.py
+++ b/addons/project/__manifest__.py
@@ -178,8 +178,6 @@
             # Form style should be computed before
             'web/static/src/views/form/button_box/*.scss',
 
-            'web/static/src/legacy/utils.js',
-
             'web_editor/static/src/js/editor/odoo-editor/src/base_style.scss',
             'web_editor/static/lib/vkbeautify/**/*',
             'web_editor/static/src/js/common/**/*',
diff --git a/addons/web/__manifest__.py b/addons/web/__manifest__.py
index 77583262815..2627e7c0310 100644
--- a/addons/web/__manifest__.py
+++ b/addons/web/__manifest__.py
@@ -116,8 +116,6 @@ This module provides the core of the Odoo Web Client.
             # Form style should be computed before
             'web/static/src/views/form/button_box/*.scss',
 
-            'web/static/src/legacy/utils.js',
-
             'web/static/src/legacy/xml/base.xml',
             # Don't include dark mode files in light mode
             ('remove', 'web/static/src/**/*.dark.scss'),
@@ -218,7 +216,6 @@ This module provides the core of the Odoo Web Client.
             'web/static/src/public/datetime_picker_widget.js',
             'web/static/src/libs/pdfjs.js',
 
-            'web/static/src/legacy/utils.js',
             'web/static/src/legacy/js/public/public_root.js',
             'web/static/src/legacy/js/public/public_root_instance.js',
             'web/static/src/legacy/js/public/public_widget.js',
diff --git a/addons/web/static/src/legacy/js/public/public_root.js b/addons/web/static/src/legacy/js/public/public_root.js
index 27bb5bc46dd..a87c2d1a98e 100644
--- a/addons/web/static/src/legacy/js/public/public_root.js
+++ b/addons/web/static/src/legacy/js/public/public_root.js
@@ -7,8 +7,6 @@ import { registry } from '@web/core/registry';
 
 import lazyloader from "@web/legacy/js/public/lazyloader";
 
-import { createWidgetParent } from "../../utils";
-
 import { makeEnv, startServices } from "@web/env";
 import { loadJS, templates } from '@web/core/assets';
 import { MainComponentsContainer } from "@web/core/main_components_container";
@@ -322,7 +320,7 @@ export async function createPublicRoot(RootWidget) {
     await startServices(env);
     Component.env = env;
     await env.services.public_component.mountComponents();
-    const publicRoot = new RootWidget(createWidgetParent(env), env);
+    const publicRoot = new RootWidget(null, env);
     const app = new App(MainComponentsContainer, {
         templates,
         env,
diff --git a/addons/web/static/src/legacy/utils.js b/addons/web/static/src/legacy/utils.js
index 6dea3a5206c..59a4a546b5e 100644
--- a/addons/web/static/src/legacy/utils.js
+++ b/addons/web/static/src/legacy/utils.js
@@ -4,33 +4,6 @@ import { App, Component, useState, xml } from "@odoo/owl";
 import { templates } from "@web/core/assets";
 import { _t } from "@web/core/l10n/translation";
 
-const reBSTooltip = /^bs-.*$/;
-
-export function cleanDomFromBootstrap() {
-    const body = document.body;
-    // multiple bodies in tests
-    // Bootstrap tooltips
-    const tooltips = body.querySelectorAll("body .tooltip");
-    for (const tt of tooltips) {
-        if (Array.from(tt.classList).find((cls) => reBSTooltip.test(cls))) {
-            tt.parentNode.removeChild(tt);
-        }
-    }
-}
-
-export function createWidgetParent(env) {
-    return {
-        env,
-        _trigger_up: (ev) => {
-            if (ev.name === "call_service") {
-                const service = env.services[ev.data.service];
-                const result = service[ev.data.method].apply(service, ev.data.args || []);
-                ev.data.callback(result);
-            }
-        },
-    };
-}
-
 const rootTemplate = xml`<SubComp t-props="state"/>`;
 export async function attachComponent(parent, element, componentClass, props = {}) {
     class Root extends Component {
diff --git a/addons/web/static/src/webclient/actions/action_service.js b/addons/web/static/src/webclient/actions/action_service.js
index de0dff5eaa3..31c3a57baab 100644
--- a/addons/web/static/src/webclient/actions/action_service.js
+++ b/addons/web/static/src/webclient/actions/action_service.js
@@ -8,7 +8,6 @@ import { evaluateExpr } from "@web/core/py_js/py";
 import { registry } from "@web/core/registry";
 import { Deferred, KeepLast } from "@web/core/utils/concurrency";
 import { useBus, useService } from "@web/core/utils/hooks";
-import { cleanDomFromBootstrap } from "@web/legacy/utils";
 import { View, ViewNotFoundError } from "@web/views/view";
 import { ActionDialog } from "./action_dialog";
 import { CallbackRecorder } from "./action_hook";
@@ -678,7 +677,6 @@ function makeActionManager(env) {
                 if (!this.isMounted) {
                     reject(error);
                 }
-                cleanDomFromBootstrap();
                 if (this.isMounted) {
                     // the error occurred on the controller which is
                     // already in the DOM, so simply show the error
@@ -775,7 +773,6 @@ function makeActionManager(env) {
         };
         let nextDialog = null;
         if (action.target === "new") {
-            cleanDomFromBootstrap();
             const actionDialogProps = {
                 ActionComponent: ControllerComponent,
                 actionProps: controller.props,
@@ -796,7 +793,6 @@ function makeActionManager(env) {
                     if (onClose) {
                         onClose();
                     }
-                    cleanDomFromBootstrap();
                 },
             });
             nextDialog = {
diff --git a/addons/web_editor/__manifest__.py b/addons/web_editor/__manifest__.py
index bcfeef9bf7d..8a4d6df0c70 100644
--- a/addons/web_editor/__manifest__.py
+++ b/addons/web_editor/__manifest__.py
@@ -104,6 +104,7 @@ Odoo Web Editor widget.
             'web/static/src/legacy/js/core/mixins.js',
             'web/static/src/legacy/js/core/service_mixins.js',
             'web/static/src/legacy/js/core/widget.js',
+            'web/static/src/legacy/utils.js',
 
             # lib
             'web_editor/static/lib/cropperjs/cropper.css',
@@ -203,6 +204,9 @@ Odoo Web Editor widget.
             'web_editor/static/src/js/frontend/loader_loading.js',
         ],
         'web.assets_frontend': [
+            # legacy stuff that are no longer in assets_backend
+            'web/static/src/legacy/utils.js',
+
             ('include', 'web_editor.assets_media_dialog'),
 
             'web_editor/static/src/js/editor/odoo-editor/src/base_style.scss',