In Root Menu and Plugins I used a "trick" to show the topbar: First that topbar gets imported, and the whole topbar has <visible>!control.hasfocus(50)</visible>, where control ID 50 is the horizontal list of plugins.
In the original topbar I don´t have this visibility, but your comment brings me an idea - let me test something
Hmm, tried to enter a visibility to normal topbar, but doesn´t work because this topbar doesn´t get imported but is always there (if activated in MPConfig).
What if you disable (not allow) the topbar in BasicHome and use your hack from Root Menu and Plugins for BasicHome. Anyway, I think this should be fixed in a proper way (in the code).