There is a bug in Unseal where, after using acceleration points and opening the chest, you do not receive the item. The chest remains in the inventory, and the acceleration points are not consumed.
The game freezes, preventing you from leaving the Unseal screen for a few seconds or minutes, but you still keep the chest and do not receive the item.
After this, if you close the Unseal screen and open it again, you will get a Fatal Error. Upon returning to the game, the Unseal chests will have been consumed, and their items will appear.

There is a bug in Unseal where, after using acceleration points and opening the chest, you do not receive the item. The chest remains in the inventory, and the acceleration points are not consumed.
The game freezes, preventing you from leaving the Unseal screen for a few seconds or minutes, but you still keep the chest and do not receive the item.
After this, if you close the Unseal screen and open it again, you will get a Fatal Error. Upon returning to the game, the Unseal chests will have been consumed, and their items will appear.