That happens when you view the potions in the Mystery Box screen before entering BA. It's a known bug, and its purely visual with no affection on gameplay. Don't worry about it.
This is an issue with Flash in general - because the game saves are stored in your computer, there's always a risk of progress loss (sometimes a day's worth of progress, sometimes your entire progress is lost). You should read the savefile backup information in the game's main menu for more information about savefile backup, in order to avoid such losses in the future! This also applies to other games that store data in your computer! Either way, sorry to hear about your loss :(
Awsomest game ever!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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That happens when you view the potions in the Mystery Box screen before entering BA. It's a known bug, and its purely visual with no affection on gameplay. Don't worry about it.