diff --git a/apps/demos/Demos/FileManager/UICustomization/Angular/app/app.component.ts b/apps/demos/Demos/FileManager/UICustomization/Angular/app/app.component.ts
index f2abf69936bf..9de9efb2d45f 100644
--- a/apps/demos/Demos/FileManager/UICustomization/Angular/app/app.component.ts
+++ b/apps/demos/Demos/FileManager/UICustomization/Angular/app/app.component.ts
@@ -1,6 +1,7 @@
 import { bootstrapApplication } from '@angular/platform-browser';
 import { Component, ViewChild, enableProdMode, provideZoneChangeDetection } from '@angular/core';
 import { DxFileManagerModule, DxFileManagerComponent, DxFileManagerTypes } from 'devextreme-angular/ui/file-manager';
+import 'devextreme/ui/menu';
 import { Service, FileItem } from './app.service';
 
 if (!/localhost/.test(document.location.host)) {
diff --git a/apps/demos/Demos/FileManager/UICustomization/React/App.tsx b/apps/demos/Demos/FileManager/UICustomization/React/App.tsx
index 1a2d675bef8d..9da9fe4f0ae9 100644
--- a/apps/demos/Demos/FileManager/UICustomization/React/App.tsx
+++ b/apps/demos/Demos/FileManager/UICustomization/React/App.tsx
@@ -2,6 +2,7 @@ import React, { useCallback, useRef } from 'react';
 import FileManager, {
   Permissions, Toolbar, ContextMenu, Item, FileSelectionItem, ItemView, Details, Column,
 } from 'devextreme-react/file-manager';
+import 'devextreme/ui/menu';
 import type { FileManagerRef } from 'devextreme-react/file-manager';
 import { fileItems, getItemInfo } from './data.ts';
 
diff --git a/apps/demos/Demos/FileManager/UICustomization/ReactJs/App.js b/apps/demos/Demos/FileManager/UICustomization/ReactJs/App.js
index 9b2af24e11a3..726d23ea8dd4 100644
--- a/apps/demos/Demos/FileManager/UICustomization/ReactJs/App.js
+++ b/apps/demos/Demos/FileManager/UICustomization/ReactJs/App.js
@@ -9,6 +9,7 @@ import FileManager, {
   Details,
   Column,
 } from 'devextreme-react/file-manager';
+import 'devextreme/ui/menu';
 import { fileItems, getItemInfo } from './data.js';
 
 export default function App() {
diff --git a/apps/demos/Demos/FileManager/UICustomization/Vue/App.vue b/apps/demos/Demos/FileManager/UICustomization/Vue/App.vue
index fc8235400861..bf86625646d2 100644
--- a/apps/demos/Demos/FileManager/UICustomization/Vue/App.vue
+++ b/apps/demos/Demos/FileManager/UICustomization/Vue/App.vue
@@ -95,6 +95,7 @@ import {
   DxFileManager, DxPermissions, DxToolbar, DxContextMenu, DxItem,
   DxFileSelectionItem, DxItemView, DxDetails, DxColumn, type DxFileManagerTypes,
 } from 'devextreme-vue/file-manager';
+import 'devextreme/ui/menu';
 import FileSystemItem from 'devextreme/file_management/file_system_item';
 import { fileItems, getItemInfo } from './data.ts';
 
diff --git a/apps/demos/Demos/Gantt/ExportToPDF/Angular/app/app.component.ts b/apps/demos/Demos/Gantt/ExportToPDF/Angular/app/app.component.ts
index 950b72afd440..db8e3aa3bf59 100644
--- a/apps/demos/Demos/Gantt/ExportToPDF/Angular/app/app.component.ts
+++ b/apps/demos/Demos/Gantt/ExportToPDF/Angular/app/app.component.ts
@@ -12,6 +12,7 @@ import { jsPDF } from 'jspdf';
 import { applyPlugin } from 'jspdf-autotable';
 import { DxSelectBoxModule, DxSelectBoxTypes } from 'devextreme-angular/ui/select-box';
 import { DxButtonTypes } from 'devextreme-angular/ui/button';
+import 'devextreme/ui/button';
 import {
   Service, Task, Dependency, Resource, ResourceAssignment,
 } from './app.service';
diff --git a/apps/demos/Demos/Gantt/ExportToPDF/React/App.tsx b/apps/demos/Demos/Gantt/ExportToPDF/React/App.tsx
index ceeaf926fd95..7256ec4b3888 100644
--- a/apps/demos/Demos/Gantt/ExportToPDF/React/App.tsx
+++ b/apps/demos/Demos/Gantt/ExportToPDF/React/App.tsx
@@ -11,6 +11,7 @@ import type { IDateBoxOptions } from 'devextreme-react/date-box';
 import {
   Gantt, Tasks, Dependencies, Resources, ResourceAssignments, Column, Editing, Toolbar, Item,
 } from 'devextreme-react/gantt';
+import 'devextreme/ui/button';
 
 import * as pdfExporter from 'devextreme-react/common/export/pdf';
 
diff --git a/apps/demos/Demos/Gantt/ExportToPDF/ReactJs/App.js b/apps/demos/Demos/Gantt/ExportToPDF/ReactJs/App.js
index 71eb5c28cd6f..fda3aa1ce886 100644
--- a/apps/demos/Demos/Gantt/ExportToPDF/ReactJs/App.js
+++ b/apps/demos/Demos/Gantt/ExportToPDF/ReactJs/App.js
@@ -14,6 +14,7 @@ import {
   Toolbar,
   Item,
 } from 'devextreme-react/gantt';
+import 'devextreme/ui/button';
 import * as pdfExporter from 'devextreme-react/common/export/pdf';
 import { jsPDF } from 'jspdf';
 import { applyPlugin } from 'jspdf-autotable';
diff --git a/apps/demos/Demos/Gantt/ExportToPDF/Vue/App.vue b/apps/demos/Demos/Gantt/ExportToPDF/Vue/App.vue
index 08bc2b581d7f..ca27ad2f57d5 100644
--- a/apps/demos/Demos/Gantt/ExportToPDF/Vue/App.vue
+++ b/apps/demos/Demos/Gantt/ExportToPDF/Vue/App.vue
@@ -161,6 +161,7 @@ import DxCheckBox from 'devextreme-vue/check-box';
 import DxNumberBox, { type DxNumberBoxTypes } from 'devextreme-vue/number-box';
 import DxDateBox from 'devextreme-vue/date-box';
 import DxSelectBox, { type DxSelectBoxTypes } from 'devextreme-vue/select-box';
+import 'devextreme/ui/button';
 import { jsPDF } from 'jspdf';
 import { applyPlugin } from 'jspdf-autotable';
 import { exportGantt as exportGanttToPdf } from 'devextreme-vue/common/export/pdf';
diff --git a/apps/demos/Demos/Gantt/Toolbar/Angular/app/app.component.ts b/apps/demos/Demos/Gantt/Toolbar/Angular/app/app.component.ts
index d5bb60db1d7c..fa2e62021be5 100644
--- a/apps/demos/Demos/Gantt/Toolbar/Angular/app/app.component.ts
+++ b/apps/demos/Demos/Gantt/Toolbar/Angular/app/app.component.ts
@@ -2,6 +2,7 @@ import { bootstrapApplication } from '@angular/platform-browser';
 import { Component, enableProdMode, provideZoneChangeDetection } from '@angular/core';
 import { DxGanttModule, DxPopupModule } from 'devextreme-angular';
 import { DxButtonTypes } from 'devextreme-angular/ui/button';
+import 'devextreme/ui/button';
 import {
   Service, Task, Dependency, Resource, ResourceAssignment,
 } from './app.service';
diff --git a/apps/demos/Demos/Gantt/Toolbar/React/App.tsx b/apps/demos/Demos/Gantt/Toolbar/React/App.tsx
index fabb9417e172..a538958243bb 100644
--- a/apps/demos/Demos/Gantt/Toolbar/React/App.tsx
+++ b/apps/demos/Demos/Gantt/Toolbar/React/App.tsx
@@ -4,6 +4,7 @@ import Gantt, {
   Tasks, Dependencies, Resources, ResourceAssignments, Column, Editing, Toolbar, Item,
 } from 'devextreme-react/gantt';
 import { Popup } from 'devextreme-react/popup';
+import 'devextreme/ui/button';
 
 import {
   tasks, dependencies, resources, resourceAssignments,
diff --git a/apps/demos/Demos/Gantt/Toolbar/ReactJs/App.js b/apps/demos/Demos/Gantt/Toolbar/ReactJs/App.js
index 204bf7f2d7de..cded2f70a19c 100644
--- a/apps/demos/Demos/Gantt/Toolbar/ReactJs/App.js
+++ b/apps/demos/Demos/Gantt/Toolbar/ReactJs/App.js
@@ -10,6 +10,7 @@ import Gantt, {
   Item,
 } from 'devextreme-react/gantt';
 import { Popup } from 'devextreme-react/popup';
+import 'devextreme/ui/button';
 import {
   tasks, dependencies, resources, resourceAssignments,
 } from './data.js';
diff --git a/apps/demos/Demos/Gantt/Toolbar/Vue/App.vue b/apps/demos/Demos/Gantt/Toolbar/Vue/App.vue
index b429d88df846..fd1ccb0d9721 100644
--- a/apps/demos/Demos/Gantt/Toolbar/Vue/App.vue
+++ b/apps/demos/Demos/Gantt/Toolbar/Vue/App.vue
@@ -83,6 +83,7 @@ import {
   DxItem,
 } from 'devextreme-vue/gantt';
 import { DxPopup } from 'devextreme-vue/popup';
+import 'devextreme/ui/button';
 import {
   tasks,
   dependencies,