Standard Editions of Sims 3 Worlds Not Considered Owned When Gold Editions Are

This isn't really a huge bug, unless someone isn't paying attention and forgets they already own a world, but I own the Gold Edition of The Sims 3: Dragon Valley, a world from The Sims 3 Store also available in the EA App. I was browsing the Sims 3 sale and noticed that it doesn't consider me to own the standard edition of Dragon Valley, despite correctly considering me as owning the Gold Edition, which is just the standard edition with some exclusive extra content.