I've been using MP3TAG for a long time and I think this is a first time I came across an mp3 that MP3TAG can't parse the fields.
If I put my cursor on the file, its tooltip displays...
I can also see these metatags and more in its file properties.
In current MP3TAG 2.66, (Artist, Album Title. Year, Track Number, Year) columns are empty. I'm sure there are more metatags columns affected.