Even if you set "Set Items' Status to be In Stock When Order is Cancelled" configuration to "No" the code in Ampersand\DisableStockReservation\Observer\CancelOrderItemObserver class is executed
Fix would be adding a configuration check in that observer
Even if you set "Set Items' Status to be In Stock When Order is Cancelled" configuration to "No" the code in Ampersand\DisableStockReservation\Observer\CancelOrderItemObserver class is executed
Fix would be adding a configuration check in that observer