Woocommerce does not see the number of units of the product, after the purchase a negative value appears. How to fix?

Question

WordPress

The value is "Manage quantity", the quantity of goods is 10 pieces.
When buying a product (let's take 1 unit), the quantity of the product changes by -1 (it just writes a negative number)
The order details indicate that the quantity of the product has changed from 0 to -1 (maybe -2 and -10 are all the numbers of purchased units goods)
I updated the plugin, put the manager to track the remains - nothing helped. How can you fix it?

Answer 1

Everything is purely individual, there can be 100500 options depending on the settings in the admin panel + all sorts of theme hooks and plugins