I didn't realize anything was amiss until I hatched my Jingle and went to craft Glasswing. The only way I figure I can prove I earned that prize token for the Glasswing is by taking a screenshot of the side goal where it show the progress bar at the top. It's clear to see that I completed the first portion of the goal (hatching Jingle) but the second part is incomplete.
I'm not saying this is what people should do, it's just the only thing I could think of since I was too slow to catch the problem. To be honest, I'm not really sure if any of this will even matter. They'll either make reparations or not, I don't think all my paranoid documentation will make or break their decision in the long run.