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* [x] I have searched the issue tracker for an issue that matches the one I want to file, without success.

### Issue Details

* **Electron Version:**
  * 12.0.0-beta.1 to 12.0.0-beta.6
* **Operating System:**
  * Windows 10 (2004) 
* **Last Known Working Electron version:**
  * 11.x.x (all of them)

### Expected Behavior
Click on Menu Item opens the submenu of this item

### Actual Behavior
Clicking on menu set with Menu.setApplicationMenu(Menu.buildFromTemplate(topLevelItems)); is not possible. Pressing "ALT" Highlights the menu but nothing more happens

### To Reproduce
Build Application with menu
shell/browser/ui/views/menu_bar.cc
return kViewClassName;
}
void MenuBar::ButtonPressed(views::Button* source, const ui::Event& event) {
  
  SetAcceleratorVisibility(false);
  if (!menu_model_)
    return;
  if (!window_->HasFocus())
    window_->RequestFocus();
  int id = source->tag();
  ElectronMenuModel::ItemType type = menu_model_->GetTypeAt(id);
  if (type != ElectronMenuModel::TYPE_SUBMENU) {
    menu_model_->ActivatedAt(id, 0);
    return;
  }
  
  auto* menu_delegate = new MenuDelegate(this);
  menu_delegate->RunMenu(
      menu_model_->GetSubmenuModelAt(id), source,
      event.IsKeyEvent() ? ui::MENU_SOURCE_KEYBOARD : ui::MENU_SOURCE_MOUSE);
  menu_delegate->AddObserver(this);
}
void MenuBar::RefreshColorCache() {