NEW: Remove Leading-Trailing Spaces
Remove Leading-Trailing Spaces will remove any number of extra space characters at the beginning and ending of chosen tags (Name, Artist, Album Artist, Album, Composer, Genre, Grouping and Show) in the selected tracks.
Selected tags are remembered between launches.
iTunes 12 won't let you add leading or trailing spaces to a text tag in the Get Info panel so these sorts of anomalies are likely to be the result of tagging by another means (by editing a tag directly in the iTunes browser window, for example, or by using another application).