EU tax mode problem

[info@.....nl]

I use the EU tax mode. The tax behaviour should be as follows:

1) When you live in another EU country than the Netherlands and enter a valid EU VAT ID, you don't have to pay tax.
2) Customers from the EU without a valid EU VAT ID pay 19% tax.
3) Customers from outside the EU don't pay tax.
4) All Dutch customers pay 19% tax.

Everything is fine, except rule 1). When I enter Germany + a valid german vat ID, I sill have to pay 19% tax.