So I've been saving pero shakes up to use at the end of the event (or a rainy day, whichever comes first) but my shakes keep disappearing the day after... Did they change the expiry date to 24 hrs? I checked the wiki and it says they don't dissapear until the end of the event. This has happened on multiple occasions, the first being I had something 3 shakes in my collection but the next day they were missing. I couldn't remember using them but I figured I must have just forgot, however this happened two more times. Where are they going? Did the expiry date change?