Yea, that storyline was so silly...... Leon & Pob were so cute! But suddenly at last episode the makers decide…
I don't think that was a mess up. I'm pretty sure that was intentional so that it could compliment the main characters. More than likely, this is why there is a "bonus episode" to this series. It's silly, but... one episode is 50 minutes long... To say that they could have made the 12th episode two hours long, but then... where's the fun in that?