Could it be, that you don’t know, how to inspect code?
My personal edition of Muse knows, how to build code correctly“. Was a hard time, to teach it to do so, but finally I succeeded , and Muse gave up, to show „garbage“.
How did you do that? How?
Simply by less grumbling and more knowing.
Every modern browser has a command to inspect the page code. In Safari it is called „Show Source“ and you may find this menu command after activating the „Developer“ menu in „Preferences.
In Chrome you find this command under menu „View/Developer“.
In other browsers you might find this command by searching.