User blog comment:Adam Carey/Making Ads Better: What We've Done So Far/@comment-954127-20170118221627/@comment-20644-20170118223226

We don't have pop ups that open a new browser tab or window, if that's what you mean. If you see one, you're seeing a programmatic ad that isn't playing by the rules. We don't support pop ups like that, so if you see one then you can report it to us.

If that's not what you meant, can you explain further?