Treasure Hunt

I have a group of small questions. I notice that the Treasure Hunt is still on My Garden. One, when will it remain there? Two, is it the same situation as the others? Three, is it there only for those who finished the quest or is it still open for those who haven't finish it yet?

It's still there for me as well, and I finished the quest.

Same here, looks like it's a permanent addition. I like that!