@Olen Yes, partly. You need to go to settings and disable Approved (or Allowed) Ads, I can't remember the exact terminology. And I had to re-add one of my whitelisted websites to see all my other blocked website exceptions.
There is similar problems mentioned in other threads, where people are having issues. It was stated in one of them that the opera team was working on a solution. The disabled ads is a temporary solution and not 100% effective.