What does the Spanish tree not have some of the icons?
If I start a new account, there are a lot more icons. But on the account I've already been working on for a while, I don't see them. Like travel, school, people.
Duolingo is working on an update of the Spanish tree. It's slowly being rolled out to users and usually, new users get the new tree first. So your new account has the new Spanish tree, your old account still has the old tree (but will probably get the new tree at some point if the statistics DL is collecting are satisfactory).