in every edition of MB to date the auto tagging tool "capitalise" reads roman numerals as a word as leaves them looking like so:
Iii, Ii, Xvi, etc.. when they should be III, II, XVI respectively.
many artists self title their albums with only roman numerals to distinguish between releases (Chicago is a prime example)
The capitalise tool is one of my favourite features and I use it a lot. hence my post about it.