Club Penguin Stamp Bug

While on Club Penguin today I noticed a strange bug, if you check your pins in your stamp book the release date is wrong. This is only the case on the Toothbrush and Taco pin, take a look below:


The Toothbrush pin was released on June 1st but it's only May 31st! It can't be released in the future! Also the taco pin was released in January 2009 that's over 2 years ago!  Why do you think there is this bug? Leave a comment to tell me ~Happyblue128