I do not see it in my sidecart, and my 'next product' in the Lost Omens sub is "Pathfinder Lost Omens: Absalom, City of Lost Omens", prior product is the LOCG.
This is something that can happen during our order generation process. Between when we begin order generation and when your specific order is generated, it is not unusual for your current subscription items to be pulled from your subscription view for a bit.