PDF Portfolio View Options

Greetings everyone,

Previously, after adding files to a portfolio, you could view file thumbnails on the left side of the window and could also see a preview of the file on the right siden of the window.  You could toggle from file to file using the thumbnails.  Now we noticed we can only see a list of the files (see attachment).  Is this the only option to view files contained in a PDF portfolio? Thank you Tiffany