Shopify Flow not recognizing empty tags in customer

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We have set a flow when an order is created to check if the customer has a specific tag associated (ID verification completed). If the customer is not verified, then an ID verification email is sent. If not, the order is processed.

The problem we are facing is that when a user places an order for the first time, moment in which the customer is created, the tags are empty but somehow Shopify evaluates the second condition to False, therefore not sending the ID verification email. If the customer then places a second order, the Flow will trigger the ID verification email, because tags are now not empty.

The problem arises when there are no tags in the customer. Somehow the condition of "Tags items is empety or does not exists" is not working.

Has anyone faced this issue/bug?