We have recently installed Magento 2 on AWS, after using Magento 1 on another server. We did a fresh install with a new store. Magento is up to date at 2.0.9. Everything is running, except when an order is placed, stock does not decrease. Configuration > Catalog > Inventory > Decrease Stock When Order is Placed is set to Yes.
I have searched extensively on this issue and have found nothing. Any help would be greatly appreciated - we are close to launch and have only just noticed this issue. Thank you very much.