Please bring back The search by name text box in the open dialogue seems to have dissappeared. It is difficult to find artwork without it, especially when there are a lot of documents stored in the adobe cloud to choose from.
Search by name does show when opening Illustrator at first (when no other documents are open) it does not show when you choose open from the menu.
The work around is to close all open documents and use the default dialogue - very terrible for workflow, or to use creative cloud which does a poor job of searching (searches all documents, not just Illustrator.