Bug with tightly nested lists

[karger]

https://codepen.io/karger/pen/LYKNKdX?editors=1100

I'm trying to create a list of lists, but if I do it the obvious way with an mv-list item that is also an mv-list, mavo doesn't properly recognize the list structure I want. If I do is more explicitly, with the inner mv-list nested inside the outer mv-list-item, then it appears to work but edits to the list are not triggering updates to the printed value of the list.