Possible Problem With "tax Rate For All Pickup Orders"

This may be a bug. 99% of my business is local to my location, but occasionally I will have a customer out of state place an order and mark it for pickup at the studio. If the order is to be picked up, regardless of the billing address, I want my state tax to be charged.

I have filled in the Tax Rate for all Pickup Orders at 6.0000%. The option I have for Studio Pickup has "This option is for a pick up " checked. 

It doesn't happen often, but for the second time this year, I had an order placed from out of state, marked for pickup, and the 6% tax was not charged.

My next step will be to delete the pickup option I have and create a new one to see if this helps. Before I do that, has anyone seen this issue, or does anyone have a suggestion? Thanks.

Is it possible the item they purchased is not marked as taxable?

The item is a collection. It is marked as taxable. I wonder if it being a collection has anything to do with it?

I don't why that would be then.