IntelliJ IDEA Favorites tool window

IntelliJ IDEA previously had a Favorites tool window.

I can no longer find it, but I found the Bookmarks tool window, which seems to have my old favorites listed in it.

But the old Favorites let me see inside directories that were added to the tool window when I dragged and dropped them there.

The Bookmarks tool window lists my old favorites, but I cannot expand them to show the contents of the directories or do anything at all with them.  Nor can I drag & drop new directories into the favorites in the Bookmarks tool window.

Is this intentional or a bug?

How can I get back the equivalent of the old functionality?