It depends on what you think the design should have been. Some might look on and say that the ability for states to group together and not permit what they view as an overbearing ruling as a feature. Others would call it dissent.

On the other hand, EU states retain their national sovereignty, and could leave the EU if they disagreed with the EU that deeply, which the UK has currently done. The ability for states to group together and buck rulings, in a sense, makes it less likely for states to leave the union entirely. This ability may also have helped convince states to join the EU in the first place.