FCoreDelegates::OnControllerConnectionChange Not Working

FCoreDelegates::OnControllerConnectionChange

Device : Xbox Controller <-> Android

Connection Type : Bluetooth

I want to receive Connect / Disconnect Controller event.

Wired Connect / Disconnect event work well.

And Wireless Connect event work well too.

But Wireless Disconnect event not working.

How can I receive Wireless controller disconnect event?

And I also try

  auto genericApplication = FSlateApplication::Get().GetPlatformApplication();
  if (genericApplication.Get() != nullptr && genericApplication->IsGamepadAttached())
  {
      return true;
  }
  return false;

But this has same issus.