This fixes the main problem, but: Treemaps are indifferent to "unknown" or "unlabeled" nodes. Area is disk space. Whereas the simple act of labelling a node a

This fixes the main problem, but: Treemaps are indifferent to "unknown" or "unlabeled" nodes. Area is disk space. Whereas the simple act of labelling a node adds another outer ring arc to the sunburst (thus more coloured area), even though the underlying truth hasn't changed.