I am attempting to use +add>Book on the bookbrainz website to add books, but the form is nonfunctional. I can enter text into any plain text dialog box, but anything using javascript such as sort name guess/copy, author lookup, publisher lookup, the next button, the details tab, the contents tab, the +add dropdown menu, the docs dropdown menu, and the user dropdown menu cannot be interacted with.
I have attempted this in Edge, Chrome, and Firefox and had the same issue. Adblock has been disabled and all other plugins have been disabled. I had tried on a different computer with no change in the problem. I also tried test.bookbrainz.org and it had the same issue.
It is still possible to add Works, Editions, Series, and Authors using their respective entrys in the +add dropdown menu - after navigating to a new page where javascript works.