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### 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/submenu_button.cc
const SkColor& background_color)
    : views::MenuButton(PressedCallback(), gfx::RemoveAccelerator(title)),
      background_color_(background_color) {
#if defined(OS_LINUX)
  
  SetBorder(CreateDefaultBorder());
#endif
  if (GetUnderlinePosition(title, &accelerator_, &underline_start_,
                           &underline_end_))
    gfx::Canvas::SizeStringInt(GetText(), gfx::FontList(), &text_width_,
                               &text_height_, 0, 0);
  SetInkDropMode(InkDropMode::ON);
  SetInkDropBaseColor(
      color_utils::BlendTowardMaxContrast(background_color_, 0x81));
}
SubmenuButton::~SubmenuButton() = default;