New Duplicate protection not working?

Am I misunderstanding something here? I tried a classic card pack and a descent of dragons card pack. I still get duplicates. For example after opening, I have now 3x Shrubadier 3x Sky Raider 3x Fiendish Rites in my collection. Isn’t it suppose to protect not getting more than 2x ?

Even before, you could get a duplicate legendary, if you already had all of the legends (associated with that set).

Now, you can get extra commons, (or rares or epics) if you’ve already had two of every card of that rarity from that set.

Your most common pack will still be four commons and a rare, even if that means all of them will be extras.

Sounds like you have all the commons for Descent of Dragons then. It wouldn’t have given those if you still had some Commons to get or get 2 of.

My Classic pack from Tavern Brawl had the protection. While it was a rubbish pack (basically a 40 duster), it gave me commons (up to 2) and a Rare I didn’t have.

The first pack in ages I didn’t have to dust anything.