Well, it's really common that certain countries like France or Denmark has rare edits for Green Day songs. I know there is another Radio Edit for Oh Love which lenght is just 3 minutes. Also, there is a rare radio edit for When I come around which was in a Radio Promo CD from a Mexican Radio station called "Radio Activa". Unfortunately, The song at the beggining is watermarked.
Also, I would dare to say the song 21st Century Breakdown has another Radio Edit which is a "Lost media". I remember it has the intro part with acoustic guitar sampler, but the song is shorter than the album version.
And finally, one of the biggest "mysteries" in GD's Radio Edits are the Radio Versions for Walking Contradiction. In my youtube channel are available the Radio Edit #2 (The same mix for WC videoclip) and the Radio Version (which comes from a green CD promo). However, there is a "Radio Version 2" from an orange CD Promo. I asked to 3 people who have this CD about this version and one of them told me that (supposedly) is the same as Radio Edit #2. And last year appeared another CD Promo with a "Remix Clean Edition" in discogs.
And these are just a few examples...