https://www.familysearch.org/search/catalog/2729316

You mean the "click _here_" link? It works fine for me, going to a Books page for a Missouri public junior college handbook (https://www.familysearch.org/library/books/records/item/583244-redirection).

I noticed from the screenshot that I wasn't even logged in. When I clicked View Inside, it did take me to the login screen first, but then when I clicked it again, it took me to the book viewer, where I can page through the handbook without any problems.