Two things to mention:
1. The text search doesn't seem to work. For example if I type "comments", "blog", or "article" and click the search button, it seems like it's not filtering the results.
2. I have absolutely no problem showing the featured apps when opening the application store in ES.

However for the sake of an easier user experience I do suggest hiding them when a query or filter is applied. This way the apps the user is trying to find isn't buried by featured apps.
The rest of the store filters appear to being working as expected.