Does a pending payment reset stock in Shopify?

[epayco]

Hello Shopify partners

We have a doubt, if the transaction is "pending" and after that the new status is "rejected" or "cancelled", Shopify reset the product in the stock? Because we're testing that flow but Shopify isn't reseting the product in the  stock. 

Example: We have 10 products, the transaction is pending (in this moment I have available 9 products to sell to another customers) but after that the new status is "rejected", I would having again 10 products in my stock right? automatically... or this flow doesn't exist and I need to reset the stock of the product manually in my store in Shopify?

Exist any app to reset the product in the stock automatically?