Billing relevance across EU countries does not work between CZ and HU countries

Hello

I have an issue with creating OD for plant is Czech and the customer is in Hungary, normally my item is relevant for billing accross EUropean countries and both countries CZ and HU set as EU countries, but my outbound delivery is not relavnt for billing

If I change the country of the customer to CZ, FR, it works, the item is relevant for billing.

Would you please advise ? Thanks a lot for your help.