Ah yes. That bug was fixed a while ago. But all these albums need to be re-saved iirc. Starvynth might remember that better, he is usually holding my hands during these fixes as I don't work with the database a lot.
Top 200 albums requires at least 200 votes, with only studio albums featured. Top 20 albums of the year, Top albums by styles, Bottom albums, Live albums and DVDs require 20 votes.
You can create advanced top-lists in the Album index, customizing genres, media types, minimum number of votes, years range and so on.
