Private: Bug/Issue Inventory Calculation

I have a problem in inventory at newest update Laraship. After customer paid some/more than one item quantity, item in inventory are reduced by just one item quantity. Not the same as the number of items from a customer’s purchase. Here is my method to reproduce this Bug/Issue

1. Initial stock inventory – https://ibb.co/dD5ZbqF
2. Customer has been paid 5 item quantity – https://ibb.co/Wyyrs3n
3. Stock Inventory only 1 item decreased – https://ibb.co/hB8kh70