if customers put goods in the shopping basket shortly before closing time and no longer make it to the cashbox in time, the goods disappear.
That (only) happens with your own character and with 2x time acceleration.
The fact that customers can get stuck after closing time was already reported here:
I have now added the information to the bug that items in the customer’s shopping basket will be lost.
Took me quite a few tries to get the right timing.